Hunan Hengan Weiye Metal Products Co., Ltd.
| Standard | ASTM A182, A276, A479, EN 10222-5, GB/T 1220 |
| Surface finish | Black (hot-rolled / forged), peeled, turned, ground, polished |
| Delivery Time | 10–30 Working Days |
| Diameters | OD:50 mm – 2000 mm; ID:20 mm – 1800 mm; Height: 20 mm –6000 mm |
| Grade | 410, 420, 431, 440C |
| Delivery condiions | Hot Forged, Fully Annealed, Stress‑Relieved, Pickled |
| Packaging Details | Waterproof polybag + Export wooden pallet / wooden case |
| Payment Terms | T/T,L/C AT SIGHT |
| Lengths | Usually 2 m to 6 m in straight bars; custom lengths available |
| Place of Origin | China |
| Brand Name | HA Steel |
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Product Specification
| Standard | ASTM A182, A276, A479, EN 10222-5, GB/T 1220 | Surface finish | Black (hot-rolled / forged), peeled, turned, ground, polished |
| Delivery Time | 10–30 Working Days | Diameters | OD:50 mm – 2000 mm; ID:20 mm – 1800 mm; Height: 20 mm –6000 mm |
| Grade | 410, 420, 431, 440C | Delivery condiions | Hot Forged, Fully Annealed, Stress‑Relieved, Pickled |
| Packaging Details | Waterproof polybag + Export wooden pallet / wooden case | Payment Terms | T/T,L/C AT SIGHT |
| Lengths | Usually 2 m to 6 m in straight bars; custom lengths available | Place of Origin | China |
| Brand Name | HA Steel |
This series martensitic stainless steel forged rings are produced via open-die forging and seamless radial ring rolling process. All martensite grades are supplied in full annealed soft state for easy CNC machining; customers can perform custom quenching & tempering to target hardness levels.
No expensive nickel element in base formula, greatly cutting procurement cost compared to 304/316L austenitic steel. Different carbon & nickel contents create tiered performance: low-carbon 410 for light-load equipment; medium-carbon 420 for tool & mold rings; nickel-containing 431 for high-toughness pressure parts; high-carbon molybdenum 440C for ultra-wear bearing and measuring fixture forgings. Seamless ring blank eliminates heavy deep boring of solid bar, widely machined into valve flanges, mold holder rings, bearing retainers and mechanical sealing annular components for machinery, mold, hydraulic and hardware industries.
Basic 13% chromium low-carbon martensite. Soft after annealing, good machinability; moderate hardness after quenching, suitable for general valve, pump and low-load mechanical ring forgings with dry atmospheric service.
Medium chromium & medium carbon martensite. Higher hardening capacity than 410; balanced wear & mild anti-rust performance, ideal kitchen hardware, mold and medical equipment annular parts.
Nickel-modified martensitic stainless steel. Extra nickel boosts toughness and anti-corrosion capacity, avoids brittle failure under cyclic load for high-strength hydraulic & pressure vessel rings.
Highest carbon martensite with molybdenum additive. Reaches extreme hardness after quenching, outstanding abrasion resistance; premium blank for precision bearings, gauges and heavy wear mold rings.
| Grade | C | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr | Ni | Mo | Fe |
|---|---|---|---|---|---|---|---|---|---|
| 410 | 0.08–0.15 | 1.00 | 1.00 | 0.040 | 0.030 | 11.5–13.5 | ≤0.75 | — | Balance |
| 420 | 0.16–0.25 | 1.00 | 1.00 | 0.040 | 0.030 | 12.0–14.0 | ≤0.75 | — | Balance |
| 431 | 0.12–0.22 | 1.00 | 1.00 | 0.040 | 0.030 | 15.0–17.0 | 1.25–2.50 | — | Balance |
| 440C | 0.95–1.20 | 1.00 | 1.00 | 0.040 | 0.030 | 16.0–18.0 | ≤0.75 | 0.40–0.70 | Balance |
| Property | 410 | 420 | 431 | 440C |
|---|---|---|---|---|
| Delivery Condition | Hot Forged, Fully Annealed, Stress‑Relieved, Pickled | |||
| Min Tensile Strength (MPa) | ≥415 | ≥485 | ≥620 | ≥760 |
| Min 0.2% Yield Strength (MPa) | ≥205 | ≥275 | ≥390 | ≥420 |
| Min Elongation (50mm gauge) | ≥20% | ≥15% | ≥12% | ≥12% |
| Max Brinell Hardness (Annealed) | ≤207 HB | ≤223 HB | ≤255 HB | ≤255 HB |
No nickel alloy element, raw material price far lower than austenitic stainless steel for dry & weak corrosive environments.
All martensite grades can be hardened after machining; 440C reaches HRC58–62 for extreme wear service.
Magnetic in all heat treatment states, perfect for magnetic mechanical assembly ring components.
410 general use, 420 tool steel, 431 high-toughness, 440C ultra-wear, one-stop grade matching.
Uninterrupted metal fiber from ring rolling improves fatigue resistance under cyclic load & pressure.
We provide integrated open-die forging & seamless ring rolling production, full CNC precision machining per customer CAD/PDF drawings:
We supply martensitic forged rings for mold, hydraulic, machinery and hardware global industrial clients.
Mill Test Certificate EN 10204 3.1 can be issued and delivered together with shipment documents before delivery.
Normally 10 – 45 working days after receiving advance payment. Exact lead time depends on ring OD/ID size, height, order quantity and custom heat treatment demands.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
1998
Total Annual:
>1-2 billion
Employee Number:
>200+
Ecer Certification：
Verified Supplier
HengAn Weiye Steel Group (HA Group) is a leading Chinese supplier of special steel, alloy materials, and precision machining services, with nearly 30 years of industry experience. The company integrates material sourcing, manufacturing, processing, and international trade, providing one-stop solutio... HengAn Weiye Steel Group (HA Group) is a leading Chinese supplier of special steel, alloy materials, and precision machining services, with nearly 30 years of industry experience. The company integrates material sourcing, manufacturing, processing, and international trade, providing one-stop solutio...
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