Stainless Steel 431
Stainless Steel 431
Apar Alloys, a leading Stockist and Supplier of stainless steel materials, offers Stainless Steel 431, a martensitic stainless steel valued for its high strength, excellent wear resistance, and moderate corrosion resistance. This grade is ideal for engineering components, shafts, and valve parts where durability, dimensional stability, and mechanical reliability are critical. Known for its consistent performance and robust mechanical properties, Stainless Steel 431 is widely trusted across industries requiring dependable strength and moderate environmental resistance.
The addition of chromium and nickel in Stainless Steel 431 enhances corrosion resistance while retaining good machinability. It can be heat treated to achieve high tensile strength and hardness, making it suitable for applications that demand a balance of strength, toughness, and moderate corrosion resistance. Its versatility ensures long-lasting performance in components subjected to mechanical stress and moderate corrosive conditions.
Specifications
| Grade | AISI | UNS | ASTM A276 / A479 | ASTM A582 | EN (W-Nr) | DIN Spec |
|---|---|---|---|---|---|---|
| 431 | AISI 431 | S43100 | A276 / A479 | A582 | 1.4057 | X12CrNi17-2 |
General Characteristics
Martensitic chromium-nickel steel
Good machinability and can be heat treated
High corrosion resistance in moderately corrosive environments
Magnetic in all conditions
Can be hardened by heat treatment
Excellent dimensional stability and surface finish
Chemical Composition (nominal) %
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Fe | N |
|---|---|---|---|---|---|---|---|---|---|---|
| SS 431 | ≤0.20 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 15.0–17.0 | 1.25–2.50 | ≤0.60 | Balance | ≤0.10 |
Applications
Durable pump shafts and industrial valve components
High-strength gears and long-lasting fasteners
Reliable studs and corrosion-resistant bolts
Precision motor shafts and sturdy axles
Efficient automatic screw machine parts
Accurate precision-engineered mechanical components
Advantages
- High strength and hardness after heat treatment
- Excellent corrosion resistance in moderately corrosive environments
- Smooth surface finish suitable for precision parts
- Good dimensional stability
- Cost-effective and reliable for industrial applications
Mechanical Properties (Typical at Room Temperature)
| Property | 431 |
|---|---|
| Tensile Strength (MPa) | 850 |
| Yield Strength (0.2% Proof, MPa) | 450 |
| Elongation (%) | 15 |
| Hardness (Brinell) | 250 max |
Why Choose Apar Alloys
At Apar Alloys, we combine technical expertise with a client-first approach. Our wide inventory and strong sourcing network ensure that materials meet international standards and specific project requirements.
Reliable Stock for Immediate Dispatch
We maintain premium alloy and stainless steel materials that are always ready for quick delivery.
Globally Sourced High-Quality Materials
All materials are procured from reputed international mills, ensuring superior quality and reliability.
Stringent Quality Checks
Every product undergoes thorough inspections and certifications to guarantee consistent, top-grade performance.
Customized Solutions for Every Requirement
We provide tailored sizing, cutting, and finishing services to meet precise client specifications.
Competitive Pricing with Timely Delivery
Apar Alloys offers cost-effective solutions while ensuring prompt and dependable delivery across industries.
Personalized Client Support
Our expert team provides dedicated assistance, fostering long-term relationships based on trust and reliability.
Get in Touch
Contact Us
Looking for a dependable partner for your stainless steel requirements? Contact us today for quotes, technical guidance, or customized supply options for Stainless Steel 431.
[Call] +91 98333 89128
301, 3rd floor, A WING, Krishvi Escape, Near Vinay Health Home, Fanaswadi Bhuleshwar, Mumbai - 400002.
Send Mail
