Hunan Hengan Weiye Metal Products Co., Ltd.
| Standards | ASTM A182, A276, A473, EN 10222-5, GB/T 1220 |
| Condition | Annealed (most common); Normalized as required |
| Delivery Time | 10–30 Working Days |
| OD | 100 mm – 2000 mm (larger sizes available upon request) |
| Grade | 409, 430, 439, 444,446 |
| Surface Finish | Rough forged, turned, or ground |
| Packaging Details | Waterproof polybag + Export wooden pallet / wooden case |
| Payment Terms | T/T,L/C AT SIGHT |
| Height | 20 mm – 500 mm |
| Place of Origin | China |
| Brand Name | HA Steel |
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Product Specification
| Standards | ASTM A182, A276, A473, EN 10222-5, GB/T 1220 | Condition | Annealed (most common); Normalized as required |
| Delivery Time | 10–30 Working Days | OD | 100 mm – 2000 mm (larger sizes available upon request) |
| Grade | 409, 430, 439, 444,446 | Surface Finish | Rough forged, turned, or ground |
| Packaging Details | Waterproof polybag + Export wooden pallet / wooden case | Payment Terms | T/T,L/C AT SIGHT |
| Height | 20 mm – 500 mm | Place of Origin | China |
| Brand Name | HA Steel |
This series ferritic stainless steel forged rings are produced by open-die forging and radial ring rolling technology. After full annealing and stress relief heat treatment, uniform single ferritic microstructure is obtained without austenite phase.
Ferritic stainless steel contains no nickel element, greatly cutting raw material cost compared to nickel-bearing austenitic steel. Four grades cover diversified working conditions: low-cost 409 for auto exhaust; universal 430 for household & light industrial equipment; stabilized 430 for welded high-temperature components; molybdenum-alloyed 444 for freshwater & low-chloride equipment. Seamless ring blanks save solid bar heavy boring processing cost, widely machined into exhaust flanges, heat exchanger support rings, water heater annular parts and light chemical vessel flanges for automotive, HVAC, household appliance and environmental protection industries.
Low Cr content with titanium stabilizer, outstanding high-temperature oxidation resistance for vehicle exhaust systems; economical, suitable dry high-temperature environment with weak corrosive media.
Classic 17Cr ferritic grade, stable in atmospheric & dilute nitric acid, good polishing performance for decorative & general mechanical ring parts.
Titanium added to bind carbon, no intergranular corrosion after welding; better ductility than 430, ideal welded exhaust & heat equipment forgings.
18Cr plus molybdenum & titanium, greatly improved pitting resistance in freshwater & low chloride brine, substitute low-end 316L for water treatment equipment.
| Grade | C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr | Ni ≤ | Mo | Ti | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| 409 | 0.08 | 1.00 | 1.00 | 0.045 | 0.045 | 10.5–11.5 | 0.50 | — | 0.15–0.50 | Balance |
| 430 | 0.12 | 1.00 | 1.00 | 0.040 | 0.030 | 16.0–18.0 | 0.75 | — | — | Balance |
| 439 | 0.03 | 1.00 | 1.00 | 0.040 | 0.030 | 17.0–19.0 | 0.50 | — | 0.15–0.80 | Balance |
| 444 | 0.025 | 1.00 | 1.00 | 0.040 | 0.030 | 17.5–19.5 | 1.00 | 1.75–2.50 | 0.10–0.60 | Balance |
| Property | 409 | 430 | 439 | 444 |
|---|---|---|---|---|
| Delivery Condition | Hot Forged, Fully Annealed, Stress‑Relieved, Pickled | |||
| Min Tensile Strength (MPa) | ≥360 | ≥450 | ≥415 | ≥415 |
| Min 0.2% Yield Strength (MPa) | ≥175 | ≥205 | ≥205 | ≥275 |
| Min Elongation (50mm gauge) | ≥25% | ≥22% | ≥22% | ≥20% |
| Max Brinell Hardness | ≤179 HB | ≤183 HB | ≤179 HB | ≤183 HB |
No nickel alloy element, raw material price far lower than 304/316L austenitic stainless steel, large-scale equipment cost reduction.
Higher thermal conductivity, lower thermal expansion coefficient, less thermal deformation under cyclic heating for heat exchanger & exhaust ring parts.
Fully magnetic in all heat treatment states, suitable magnetic mechanical assembly components without extra magnetization process.
409 high temp oxidation; 430 general mild corrosion; 439 weld-stable; 444 chloride pitting resistant, one-stop grade selection for diverse environments.
Ferritic matrix avoids chloride SCC failure which often occurs on 304 stainless steel under warm brine service.
We provide integrated open-die forging & seamless ring rolling production, full CNC precision machining per customer CAD/PDF drawings:
We supply ferritic forged rings in 409/430/439/444 for automotive, HVAC, environmental & household appliance global clients.
Mill Test Certificate EN 10204 3.1 can be issued and delivered with shipment documents before delivery.
- Inner: Waterproof anti-rust plastic full wrap + individual protective sleeves
- Outer: Reinforced fumigated wooden pallet / wooden case with separation blocks to avoid collision deformation
- Custom heavy-duty export packaging available upon customer request
Normally 10 – 45 working days after receiving advance payment. Exact lead time depends on ring OD/ID size, height, order quantity and custom machining 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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