Seamless S43100 & 431 Austenitic Stainless Steel Rod, Heat-Resistant Stainless Steel Bars

We supply high-performance stainless steel bars and stainless steel rods in multiple material grades, including austenitic, ferritic, martensitic, and austenitic-ferritic duplex types. All products feature precision processing, excellent mechanical properties, and strong adaptability to harsh working environments, fully meeting industrial application requirements.

Material ParametersAustenitic Stainless Steel

• Representative grades: S30400 (304), S30403 (304L), S31603 (316L), N08800 (800), N08367

• Key properties: Good corrosion resistance, high temperature resistance (up to 800-1000℃), excellent ductility and weldability

• Chemical composition highlights: Cr content 16-25%, Ni content 8-22%, low carbon content for L-grade (≤0.03%)

Ferritic Stainless Steel

• Representative grades: S43000 (430), S44400 (444), S44600 (446), XM-19

• Key properties: High chromium content, good oxidation resistance, low thermal expansion coefficient, cost-effective

• Chemical composition highlights: Cr content 11-27%, no or low nickel content, added Mo for enhanced corrosion resistance

Martensitic Stainless Steel

• Representative grades: S41000 (410), S42000 (420), S44004 (440C), S43100 (431)

• Key properties: High strength, good hardness and wear resistance, machinable after heat treatment

• Chemical composition highlights: Cr content 11-17%, carbon content 0.15-0.60%, suitable for quenching and tempering

Austenitic-Ferritic Duplex Stainless Steel

• Representative grades: S31803, S32205, S32750, S32760

• Key properties: Combined advantages of austenitic and ferritic steel, high strength (yield strength 2 times that of austenitic steel), excellent pitting and stress corrosion resistance

• Chemical composition highlights: Cr content 21-27%, Ni content 4-7%, Mo content 2-4%, N content 0.1-0.3%

Process Advantages

1. Precision Cutting: Adopt advanced CNC cutting equipment, cutting precision up to ±0.05mm, ensuring consistent product size and reducing subsequent processing workload.

2. Seamless Forming: Seamless processing technology for key grades, avoiding defects such as weld seams, improving product pressure resistance and service life.

3. Polished Surface: Surface finish up to Ra≤0.8μm, smooth and burr-free, reducing friction loss and preventing corrosion caused by dirt accumulation.

4. Custom Length: Support custom processing of product length (0.5-12m) according to customer requirements, matching different installation and application scenarios.

Application Scenarios

Widely used in petroleum and chemical industry (pipeline accessories, reactor components), nuclear power industry (high-temperature and high-pressure pipelines), medical equipment (surgical instruments, equipment brackets), food processing (production equipment, conveyor parts), marine engineering (ship hull accessories, offshore platforms), and automotive manufacturing (engine parts, exhaust systems).

Quality Assurance

All products comply with international standards (ASTM, EN, JIS), pass strict quality inspection (chemical composition analysis, mechanical property testing, corrosion resistance testing), and provide complete quality certification documents to ensure stable and reliable product performance.