Wear protection engineered to outlast and outflow.
QAME manufactures premium hardfacing wires and chromium carbide overlay wear plate — including FLOWCLAD™, the smooth, non-directional CCO that keeps material moving. Made in China. Proven worldwide.
Two product lines. One obsession: wear life.
Every QAME product is built on the same high-chromium metallurgy, deposited by submerged-arc cladding or delivered as flux-cored wire for your own hardfacing work.
QARC™ Hardfacing Wires
Open-arc and gas-shielded flux-cored wires depositing the full QAME alloy range — from general purpose chromium carbide to complex and tungsten carbide chemistries. 1.6–3.2 mm, spools or drums.
FLOWCLAD™ Non-Directional Plate
Weld-bead-free, smooth surface overlay that cuts friction, ends hang-up and carries in any orientation. Available in FLOW60, FLOW80 and FLOW6000 grades, smooth or ultra-polished.
QCLAD™ Series
Proven multi-bead chromium carbide overlay plate for the widest range of sliding abrasion duties. Three grades stepping up in carbide refinement and impact tolerance.
MAXCLAD™ Series
Chromium carbide matrix reinforced with fused tungsten carbide for extreme fine-particle abrasion and elevated temperature — the top tier of the QAME range.
FLOWCLAD™ — the smooth CCO that keeps product moving.
A single-pass, powder-metallurgy cladding process fuses the wear alloy to the substrate with no weld beads — so the wearing surface performs in any direction and material flows instead of hanging up.
- Smooth, non-directional surface — less hang-up, less carry-back
- Reduced friction coefficient improves throughput
- Rolls and forms in any direction
- HRC 58–65 with retained impact toughness
- Smooth Ra < 7 µm · Ultra Polish Ra < 0.5 µm
Pick the metallurgy to match the duty.
All grades are available as plate (FLOWCLAD™ smooth or QCLAD™/MAXCLAD™ traditional surface) and as QARC™ hardfacing wire.
| Grade | Type | Hardness | Carbide Volume | Service Temp | Best For |
|---|---|---|---|---|---|
| QCLAD 60 wire: QARC 60 | Chromium carbide | HRC 58–62 | 40–60% | to 350 °C | General sliding abrasion — chutes, hoppers, liners |
| QCLAD 80 wire: QARC 80 | Complex carbide (Nb·Mo·Ti·V) | HRC 58–63 | 40–65% | to 600 °C | Severe impact and elevated temperature |
| QCLAD 90 wire: QARC 90 | Refined high-alloy carbide | HRC 60–65 | 50–65% | to 600 °C | Highest abrasion resistance in the QCLAD line |
| MAXCLAD 6000 wire: QARC 6000 | CrC + fused tungsten carbide | HRC 58–65 | >37% + WC | to 595 °C | Fine-particle abrasion, extreme duty |
| MAXCLAD 8000 wire: QARC 8000 | High-W tungsten carbide | HRC 62–67 | >45% + WC | to 595 °C | Ultimate wear life where nothing else survives |
| QMAX 50 sheets · panels · parts | 50% WC in Ni-Si-B matrix | >700 HV30 | 50% WC | — | Extreme fine-particle erosion — screens, cyclones, fans |
| FLOW60 / 80 / 6000 | Smooth-surface variants | as per grade | as per grade | as per grade | Anywhere flow, hang-up or carry-back matters |
Not sure which grade? Try the grade selector → · Plate weight calculator →
Engineered microstructures, verified every batch.
Chromium carbide
Large primary hexagonal M₇C₃ carbides in a eutectic austenite–carbide matrix.
Complex carbide
Ultra-refined MC + M₇C₃ carbides in a uniform, high-density distribution.
Tungsten carbide
Fused WC filling the inter-carbide spacing of the chromium carbide matrix.
Trusted where wear never stops.
Application Case Studies
Typical results from the QAME range in service. Every application is engineered case-by-case — ask us about yours.
Iron ore transfer chute — hang-up eliminated
Dozer blade & GET — impact plus abrasion
Excavator bucket rebuild — on site with QARC™
Fabrication & installation guides.
Everything your workshop needs to cut, form, weld and install QAME overlay plate — written by the people who make it.
01How to cut chromium carbide overlay plate
CCO plate cannot be cut with oxy-fuel — the high-chromium overlay will not oxidise cleanly. Use one of the following:
- Plasma arc (preferred) — a 200 A machine cuts most standard thicknesses. Always cut from the mild steel side to prevent carbon contamination of the backing plate.
- Water jet — best edge quality and no heat-affected zone; ideal for intricate liner profiles and CSK holes.
- Laser — suitable for thinner combinations.
- Arc-air / carbon-arc gouging and abrasive saw — suitable for site work and trimming.
Bevelling for weld prep is permitted from the hard side by grinding.
02How to roll CCO plate — pipes, cones and curved liners
- Roll with the overlay on the inside of the curve where the duty allows — this keeps the hardface in compression and avoids opening the relief cracks.
- With standard QCLAD™ plate, roll perpendicular to the weld beads. FLOWCLAD™ is non-directional and rolls in any direction.
- Minimum bending radius is approximately 75 mm for thin overlays and up to 1000 mm for thick combinations — consult QAME for your exact plate.
- Rolling with the overlay on the outside places the hardface in tension: surface relief cracks will open and should be capped with QARC™ wire if the duty requires.
- For pipe diameters below ~600 mm, specify QAME overlay pipe instead of rolled plate.
03How to press-brake and form CCO plate
- Use a wide-set bottom V-die with rounded shoulders and a rounded punch — sharp tooling concentrates strain and cracks the overlay.
- Form in small incremental strokes rather than a single deep hit.
- With QCLAD™, press perpendicular to the bead direction; FLOWCLAD™ forms in any direction.
- Keep the overlay in compression (inside of the bend) wherever possible.
- Respect the same minimum radii as rolling — 75 mm (thin) to 1000 mm (thick).
04How to stud weld CCO liners
- Studs are welded to the mild steel backing side only — never to the overlay.
- Use drawn-arc stud welding for structural studs (M12–M20 typical); capacitor-discharge studs suit thin backers.
- Grind the backing surface to clean, bright steel at each stud position before welding.
- Alternatively, weld threaded bosses or nuts to the backing with a low-hydrogen electrode (E7018).
- Mount the liner stud-side out through the shell, secure with washers and nyloc nuts, and seal-cap exposed fasteners with QARC™ hardfacing where they see flow.
05How to fit countersunk (CSK) buttons and bolt liners
- Cut the fixing hole through the full plate thickness (plasma or water jet). Precision countersinks can also be produced by EDM.
- Insert a CSK weld button / countersunk washer so its face sits at or just below the overlay surface.
- Fillet weld the button to the mild steel backing from the face side using a low-hydrogen electrode — the weld must bond to backing steel, never rely on the overlay.
- Fit the countersunk bolt from the wear face; torque from behind.
- Cap the button face and any exposed weld with QARC™ hardfacing wire so the fixing wears at the same rate as the plate.
For applications needing machined features, weld a pre-machined mild steel insert into a cut-out and machine conventionally.
06How to join and butt-weld overlay panels
- Prepare a butt joint in the backing steel — bevel from the mild steel side.
- Weld the backing with E7018 / E8018 (or E81T1-Ni2 wire). Where the weld would contact the overlay, use an ER307-type consumable.
- Leave the overlay edges unwelded with a small gap — do not attempt to fuse overlay to overlay structurally.
- Cap the joint gap flush with QARC™ hardfacing wire matched to the plate grade, so the seam wears with the plate.
- For liners, a simple step or shiplap layout with plug welds often outperforms butt joints and installs faster.
07How to plug weld liners
- Cut plug holes through the liner on a 300–500 mm grid (closer on curved or high-impact surfaces).
- Position the liner and weld through each hole into the parent structure with low-hydrogen electrode or MIG — the weld bonds to backing steel and structure, not overlay.
- Fill each plug in layers, keeping heat input moderate to limit distortion.
- Cap each plug with QARC™ hardfacing flush to the wear surface.
- Finish with a perimeter fillet weld or intermittent stitch to seal edges against fines ingress.
08Machining, drilling and grinding CCO
Overlay is not machinable by conventional tooling. Options:
- Surface grinding — abrasive disc or Blanchard grinding for flatness-critical faces.
- Holes — plasma or water jet through the full thickness; EDM for precision countersinks.
- Drilling — from the mild steel backing side only, and only through backing thickness.
- Machined features — weld in a pre-machined mild steel insert, or specify QAME machining before overlay.
Chromium carbide overlay, answered.
What is chromium carbide overlay (CCO) plate?
How much longer does CCO last than AR500 or mild steel?
What is the difference between FLOWCLAD™ and standard CCO plate?
Can you cut CCO plate with oxy?
Can chromium carbide plate be welded?
Can CCO plate be rolled or pressed?
Are the surface cracks in the overlay a defect?
What temperatures can CCO handle?
What sizes and thicknesses are available?
Do you export worldwide?
A modern cladding plant in Qingdao, built for export.
QAME — Qingdao Andelaike Mechanical Engineering Co., Ltd. — runs dedicated submerged-arc cladding lines, wire drawing and forming capability under one roof.
Ready to cut your wear costs?
Send us your drawings, duty conditions or current grade — our engineers will match a QAME solution and quote within 48 hours.
Get a QuoteThe name changed. The know-how did not.
Once known as Enduraclad China, QAME is now fully independent and supplying wear protection to global OEMs, mines, cement plants and power stations on every continent. From our manufacturing facility in Jiaozhou, Qingdao, we have spent 15 years perfecting chromium carbide and tungsten carbide overlay — today under our own name: QAME (Qingdao Andelaike Mechanical Engineering Co., Ltd.).
Our mission
To keep the world’s most punishing machines running longer — by manufacturing wear protection that outlasts expectations, ships on time, and costs less to own than the downtime it prevents.
Our vision
To be the wear plate manufacturer global OEMs specify by name — proof that “Made in China” can mean the best in the world, not just the best price.
If we wouldn’t bolt a plate to our own equipment, it doesn’t ship.
Real hardness numbers and real test reports — and if a grade isn’t right for your application, we’ll say so and recommend the one that is.
Most of our customers have been with us for over a decade; we earn the next order by how the last one performed.
Every batch tested, every process measured, every year better — the discipline ISO 9001 builds into everything we do.
Quality — ISO 9001:2015
QAME operates a quality management system certified to ISO 9001:2015 for the production and sales of wear resistant plate. Certificate no. 117 25 QU 0139-09 R1S, issued by Shanghai Ingeer Certification Assessment Services (ICAS, UKAS-accredited), valid to 31 October 2028 and verifiable on the CNCA national register (www.cnca.gov.cn) under unified social credit code 91370281MA3PU4296F.
Every production batch is hardness tested, dimensional and flatness checks are recorded, and certified batch test reports are available with any shipment.
Talk to QAME.
QARC™ Hardfacing Wires
Open-arc flux-cored wires depositing the full QAME alloy range — hard surfacing new components, rebuilding worn parts and repairing overlay plate in the field. No shielding gas required.
Welding parameters — QARC 60
| Parameter | Range | Optimum |
|---|---|---|
| Diameter | 1.6 / 2.0 / 2.4 / 2.8 / 3.2 mm | — |
| Current | 150–350 A | 270 A |
| Voltage | 24–28 V | 24 V |
| Wire feed speed | 4–8 m/min | — |
| Stick-out | 25–50 mm | 25 mm |
| Shielding gas | None required (open arc) | |
| Preheat | Not required for general hardfacing | |
Deposit properties by grade
| Wire | Deposit matches | Bulk hardness | Primary carbides | Standard |
|---|---|---|---|---|
| QARC 60 | QCLAD 60 / FLOW60 | >630 HV30 (~57 HRC) | 20–40%, ~1500 HV0.5 | AS/NZS 2576 · 2355 |
| QARC 80 | QCLAD 80 / FLOW80 | >630 HV30 | 15–35% complex MC+M₇C₃ | AS/NZS 2576 · 2455 |
| QARC 90 | QCLAD 90 | 700–780 HV30 | 25–40% | AS/NZS 2576 · 2560 |
| QARC 6000 | MAXCLAD 6000 | >700 HV30 | >37% incl. WC | — |
Typical applications: wear plate repairs, fan blades, excavator bucket protection, stackers, mobile plant, TLO systems, hoppers, screen decks and spill plates.
Deposit microstructure
QARC 60
Primary M₇C₃ carbides in a eutectic matrix of austenite and eutectic M₇C₃ carbide.
QARC 80 / 90
Complex M₇C₃ + MC carbides (80); martensitic matrix with boron (90).
QARC 6000
Primary M₇C₃ plus fused tungsten carbide for fine-particle abrasion.
Deposit chemistry — typical (%)
| Wire | C | Cr | W | B | Ni+Nb+Ti+V+W | AS/NZS 2576 | Bal. |
|---|---|---|---|---|---|---|---|
| QARC 60 | 3.5–7.5 | 21–35 | – | – | – | 2355 | Fe |
| QARC 80 | 4.0–6.5 | 21–35 | – | – | 2.5–14 | 2455 | Fe |
| QARC 90 | 4.0–6.5 | 21–35 | – | ≤2 | – | 2560 | Fe |
| QARC 6000 | 4.4–7.5 | 23–35 | 2–7 | – | – | – | Fe |
Deposit characteristics & supply
| Item | Specification |
|---|---|
| Relief check cracks | Deposits exhibit fine relief check cracks — a normal, beneficial feature of chromium carbide hardfacing that relieves stress and does not propagate into the base material. |
| Deposit layers | Maximum 2–3 layers recommended. For heavy rebuilds, butter with a tough buffer layer (e.g. austenitic) before hardfacing. |
| Typical hardness | QARC 60/80 >630 HV30 (~57 HRC); QARC 90 700–780 HV30; QARC 6000 >700 HV30. Primary M₇C₃ carbides ~1500 HV0.5. |
| Packaging | 15 kg spools; bulk drums available for automated cladding lines. Store dry in original packaging. |
| Base materials | Suitable for deposition onto mild and low-alloy steels. Join base steel with standard low-hydrogen consumables — avoid structural welds contacting existing overlay. |
Values shown are typical and for guidance only; they may vary with plate thickness and number of deposit layers. Certified batch test values are available on request.
FLOWCLAD™ Non-Directional Plate
The smooth, weld-bead-free chromium carbide overlay. Non-directional wear performance, reduced friction, no hang-up — available in FLOW60, FLOW80 and FLOW6000, smooth or ultra-polished (Ra < 0.5 µm).
Typical properties by grade
| Property | FLOW60 | FLOW80 | FLOW6000 |
|---|---|---|---|
| Duty | General sliding abrasion | Severe impact & elevated temp | Extreme abrasion & high temp |
| Surface hardness | HRC 58–62 | HRC 58–63 | HRC 58–65 |
| Bulk hardness | 620–700 HV50 | 620–680 HV50 | >700 HV30 |
| Carbide volume | 40–60% | 40–65% | >37% incl. WC |
| ASTM G65 Proc. A | 0.031 g | 0.028 g | 0.076 g |
| Temperature | to 350 °C | to 600 °C | to 595 °C |
Standard thickness combinations (mm)
| Hardface | 6 | 6 | 7 | 8 | 9 | 8 | 9 | 10 | 12 | 8 | 9 | 10 | 17 | 20 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Backing | 6 | 8 | 8 | 8 | 8 | 10 | 10 | 10 | 10 | 12 | 12 | 12 | 12 | 12 |
| Total | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 20 | 21 | 22 | 29 | 32 |
Microstructure
FLOW60
Large primary hexagonal M₇C₃ carbides in a eutectic austenite–carbide matrix, oriented perpendicular to the wear surface.
FLOW80
Ultra-refined complex carbide structure — fine primary MC and M₇C₃ carbides in a uniform, high-density distribution.
FLOW6000
Fine primary M₇C₃ carbides and fused tungsten carbides in a eutectic carbide–austenite matrix, WC filling the inter-carbide spacing.
Chemical composition — typical deposit (%)
| Grade | C | Si | Mn | Cr | W | Mo+Nb+Ti+V | Bal. |
|---|---|---|---|---|---|---|---|
| FLOW60 | 3.5–7.0 | 0.5–2.5 | 0.5–2.5 | 23–35 | – | – | Fe |
| FLOW80 | 3.5–6.0 | 0.5–2.5 | 0.5–2.5 | 23–35 | – | 2.0–4.0 | Fe |
| FLOW6000 | 3.5–7.0 | 0.5–2.5 | 0.5–2.5 | 23–35 | 3.0–7.0 | – | Fe |
Plate characteristics
| Item | Specification |
|---|---|
| Overlay surface | Smooth and free of weld beads. Fine relief check cracks are evenly dispersed and protrude to the backing plate only — they assist thermal expansion and contraction in service. |
| Flatness | Within 1 mm over 300 mm and within 5 mm over 1000 mm. |
| Surface roughness | Standard smooth finish Ra < 7 µm; Ultra Polish Ra < 0.5 µm on request. |
| Density | ~7440 kg/m³ average (varies with overlay-to-backing ratio). |
| Base plate | Mild steel as standard — finished parts readily weldable. Alternative base plate grades available to suit. |
FLOWCLAD™ sample — smooth overlay fused to a mild steel backing.
Fabrication summary
| Item | Specification |
|---|---|
| Cutting | Plasma arc preferred (200 A cuts most thicknesses), always from the mild steel side. Also: arc air / carbon arc, abrasive disc, water jet, abrasive saw. |
| Machining | Surface grinding with abrasive disc only. |
| Cold forming | Use a wide-set bottom die with rounded corners and a rounded press tool. Minimum bend radius 75 mm (thin overlays) to 1000 mm (thick overlays). |
| Welding — backing side | Low hydrogen electrode or MIG wire; weld size not exceeding backing plate thickness. Use ER307 with Argoshield 69 where a larger weld is unavoidable. |
| Welding — hardface side | Use the matching QARC™ hardfacing wire. |
| Attachment methods | Plug weld holes; countersink, counterbore, taper and tapped holes; threaded studs; perimeter fillet weld. |
Step-by-step cutting, forming, stud welding and installation instructions are in our Fabrication Guides →
Values shown are typical and for guidance only; they may vary with plate thickness and number of deposit layers. Certified batch test values are available on request.
QCLAD™ Series
Proven multi-bead chromium carbide overlay plate manufactured to AS/NZS 2576:2005. Three grades covering everything from general sliding abrasion to fine-particle erosion.
Grade data
| Property | QCLAD 60 | QCLAD 80 | QCLAD 90 |
|---|---|---|---|
| Standard | AS/NZS 2576 Gr. 2355 | AS/NZS 2576 Gr. 2455 | AS/NZS 2576 Gr. 2560 |
| Microstructure | Primary M₇C₃ in eutectic austenite matrix | Complex M₇C₃ + MC carbides in austenite | Primary M₇C₃ in martensitic matrix |
| Chemistry | Cr 21–35 · C 3.5–7.5 | Cr 21–35 · C 4.0–6.5 · Ni+Nb+Ti+V+W 2.5–14 | Cr 21–35 · C 4.0–6.5 · B ≤2 |
| Bulk hardness | >630 HV30 (~57 HRC) | >630 HV30 (~57 HRC) | 700–780 HV30 (60–64 HRC) |
| Primary carbides | 20–40% | 15–35% | 25–40% |
| ASTM G65 Proc. A | <0.26 g | <0.26 g | on request |
| Temperature | to 595 °C | to 595 °C | to 595 °C |
| Impact | Continuous impact OK | Continuous impact OK | Not for continuous impact |
| Best for | General abrasion — chutes, hoppers, liners | Medium–high abrasion with impact | Fine-particle abrasion, single layer |
All grades: flatness within 1 mm over 300 mm; smooth finish Ra < 7 µm or ultra polish Ra < 0.5 µm on request; mild steel backing readily weldable; density ~7700 kg/m³.
Microstructure
QCLAD 60
Primary M₇C₃ carbides in a eutectic matrix of austenite and eutectic M₇C₃ carbide — designed for abrasion and impact.
QCLAD 80
Primary M₇C₃ and MC complex carbides in a eutectic austenite matrix — for medium to high abrasion with impact.
QCLAD 90
Primary M₇C₃ carbides in a matrix of martensite and eutectic M₇C₃ carbide — for fine particle abrasion. Micrograph on request.
Chemical composition — typical deposit (%)
| Grade | C | Cr | Mn+Si | B | Ni+Nb+Ti+V+W | Bal. |
|---|---|---|---|---|---|---|
| QCLAD 60 | 3.5–7.5 | 21–35 | – | – | – | Fe |
| QCLAD 80 | 4.0–6.5 | 21–35 | 1–3.5 | – | 2.5–14 | Fe |
| QCLAD 90 | 4.0–6.5 | 21–35 | – | ≤2 | – | Fe |
Standard thickness combinations (mm)
| Layer | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hardface (mm) | 6 | 6 | 7 | 8 | 9 | 8 | 9 | 10 | 12 | 8 | 9 | 10 | 17 | 20 |
| Backing (mm) | 6 | 8 | 8 | 8 | 8 | 10 | 10 | 10 | 10 | 12 | 12 | 12 | 12 | 12 |
| Total (mm) | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 20 | 21 | 22 | 29 | 32 |
Plate characteristics
| Item | Specification |
|---|---|
| Overlay surface | Welded beads of varying widths with relief check cracks evenly dispersed, protruding to the backing plate only — they assist thermal expansion and contraction in service. |
| Flatness | Within 1 mm over 300 mm and within 5 mm over 1000 mm. |
| Surface roughness | Standard smooth finish Ra < 7 µm; Ultra Polish Ra < 0.5 µm on request. |
| Density | ~7700 kg/m³ average (varies with overlay-to-backing ratio). |
| Base plate | Mild steel as standard — finished parts readily weldable. Alternative base plate grades available to suit. |
Fabrication summary
| Item | Specification |
|---|---|
| Cutting | Plasma arc preferred (200 A cuts most thicknesses), always from the mild steel side. Also: arc air / carbon arc, abrasive disc, water jet, abrasive saw. |
| Machining | Surface grinding with abrasive disc only. |
| Cold forming | Use a wide-set bottom die with rounded corners and a rounded press tool. Minimum bend radius 75 mm (thin overlays) to 1000 mm (thick overlays). |
| Welding — backing side | Low hydrogen electrode or MIG wire; weld size not exceeding backing plate thickness. Use ER307 with Argoshield 69 where a larger weld is unavoidable. |
| Welding — hardface side | Use the matching QARC™ hardfacing wire. |
| Attachment methods | Plug weld holes; countersink, counterbore, taper and tapped holes; threaded studs; perimeter fillet weld. |
Step-by-step cutting, forming, stud welding and installation instructions are in our Fabrication Guides →
Values shown are typical and for guidance only; they may vary with plate thickness and number of deposit layers. Certified batch test values are available on request.
MAXCLAD™ Series
Chromium carbide reinforced with fused tungsten carbide — the top tier of the QAME range for fine-particle abrasion and elevated temperature, where standard CCO isn't enough.
Grade data
| Property | MAXCLAD 6000 | MAXCLAD 8000 | QMAX 50 |
|---|---|---|---|
| Microstructure | Primary M₇C₃ + fused WC in eutectic austenite matrix | Higher-W chemistry, dense WC dispersion | 50% WC in Ni-Si-B matrix |
| Chemistry | Cr 23–35 · C 4.4–7.5 · W 2–7 | Cr 23–35 · C 3.5–7.0 · W 3–7+ | WC 50% · Ni-Si-B |
| Bulk hardness | >700 HV30 | on request | >700 HV30 (>58 HRC) |
| Carbide hardness | 1100–1600 HV0.5 (+WC) | 1100–1600 HV0.5 (+WC) | >1900 HV0.1 |
| Total carbide volume | >37% incl. WC | >45% incl. WC | 50% WC |
| ASTM G65 Proc. A | <0.15 g | on request | — |
| Temperature | up to 595 °C | up to 595 °C | — |
| Best for | Fine-particle abrasion — PF lines, fan blades, cyclones | The most severe erosive duties | Extreme fine-particle erosion — screens, cyclones, fans |
Microstructure
MAXCLAD 6000
Primary M₇C₃ carbides and fused WC in a eutectic matrix of austenite and eutectic M₇C₃ carbide.
MAXCLAD 8000
Higher tungsten chemistry with a dense dispersion of fused WC filling the inter-carbide spacing. Micrograph on request.
Chemical composition — typical deposit (%)
| Grade | C | Cr | W | Si | Bal. |
|---|---|---|---|---|---|
| MAXCLAD 6000 | 4.4–7.5 | 23–35 | 2–7 | < 0.9 | Fe |
| MAXCLAD 8000 | 3.5–7.0 | 23–35 | 3–7+ | < 0.9 | Fe |
| QMAX 50 | — | — | 50 (WC) | — | Ni |
Standard thickness combinations (mm)
| Layer | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hardface (mm) | 6 | 6 | 7 | 8 | 9 | 8 | 9 | 10 | 12 | 8 | 9 | 10 | 17 | 20 |
| Backing (mm) | 6 | 8 | 8 | 8 | 8 | 10 | 10 | 10 | 10 | 12 | 12 | 12 | 12 | 12 |
| Total (mm) | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 20 | 21 | 22 | 29 | 32 |
Plate characteristics
| Item | Specification |
|---|---|
| Overlay surface | Welded beads of varying widths with relief check cracks evenly dispersed, protruding to the backing plate only — they assist thermal expansion and contraction in service. |
| Flatness | Within 1 mm over 300 mm and within 5 mm over 1000 mm. |
| Surface roughness | Standard smooth finish Ra < 7 µm; Ultra Polish Ra < 0.5 µm on request. |
| Density | ~7440 kg/m³ average (varies with overlay-to-backing ratio). |
| Base plate | Mild steel as standard — finished parts readily weldable. Alternative base plate grades available to suit. |
Fabrication summary
| Item | Specification |
|---|---|
| Cutting | Plasma arc preferred (200 A cuts most thicknesses), always from the mild steel side. Also: arc air / carbon arc, abrasive disc, water jet, abrasive saw. |
| Machining | Surface grinding with abrasive disc only. |
| Cold forming | Use a wide-set bottom die with rounded corners and a rounded press tool. Minimum bend radius 75 mm (thin overlays) to 1000 mm (thick overlays). |
| Welding — backing side | Low hydrogen electrode or MIG wire; weld size not exceeding backing plate thickness. Use ER307 with Argoshield 69 where a larger weld is unavoidable. |
| Welding — hardface side | Use QARC™ 6000 hardfacing wire. |
| Attachment methods | Plug weld holes; countersink, counterbore, taper and tapped holes; threaded studs; perimeter fillet weld. |
Step-by-step cutting, forming, stud welding and installation instructions are in our Fabrication Guides →
Values shown are typical and for guidance only; they may vary with plate thickness and number of deposit layers. Certified batch test values are available on request.
QMAX™ 50 — Tungsten Carbide / Ni-Si-B Overlay
Deposited by plasma transferred arc (PTA): 50% fused tungsten carbide granules locked in a tough nickel-silicon-boron (Ni-Si-B) matrix. Bulk hardness >700 HV30 (>58 HRC); carbide micro-hardness >1900 HV0.1. Supplied as sheets and panels, or applied directly to components — GET, fan blades, mixer paddles, skirt liners and other shaped parts. For severe sliding abrasion with medium impact. Full specifications on request. Maximum overall thickness 12 mm.