Stainless Steel 440C
Stainless Steel 440C
Apar Alloys, a leading Stockist and Supplier of stainless steel materials, offers Stainless Steel 440C, a high-carbon martensitic stainless steel known for its exceptional hardness, wear resistance, and strength. It is ideal for precision components, bearings, and cutting tools requiring excellent surface finish and mechanical performance. This grade ensures consistent performance and reliable dimensional stability. Stainless Steel 440C is widely trusted in industries that demand durability, precision, and superior strength. It combines hardness, toughness, and heat-treatable properties in one high-performance material.
The high carbon and chromium content in Stainless Steel 440C enables it to achieve outstanding hardness after proper heat treatment. It provides excellent edge retention and dimensional stability while maintaining good toughness for demanding industrial applications. While corrosion resistance is moderate, the alloy delivers superior wear resistance and strength. Stainless Steel 440C is perfect for applications requiring precision, durability, and reliable long-term performance.
Specifications
| Grade | AISI | UNS | ASTM A276 / A479 | ASTM A182 | EN (W-Nr) | DIN Spec |
|---|---|---|---|---|---|---|
| 440C | AISI 440C | S44004 | A276 / A479 | F440C | 1.4125 | X105CrMo17 |
General Characteristics
High-carbon martensitic stainless steel
Extremely high hardness and wear resistance after heat treatment
Moderate corrosion resistance in mild environments
Magnetic in all conditions
Excellent polishability and dimensional stability
Good machinability in the annealed condition
Chemical Composition (nominal) %
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Fe | N |
|---|---|---|---|---|---|---|---|---|---|---|
| SS 440C | 0.95–1.20 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 16.0–18.0 | ≤0.75 | ≤0.75 | Balance | ≤0.10 |
Applications
High-performance bearings and precision ball races
Industrial-grade cutting tools and sharp knives
Durable moulds, dies, and measuring gauges
Reliable surgical instruments and medical valves
Robust mechanical seals and rotating shafts
Aerospace components and precision-engineered parts
Advantages
- Highest hardness and wear resistance among stainless steels
- Excellent dimensional stability during heat treatment
- Good corrosion resistance in fresh water and mild atmospheres
- Magnetic and heat-treatable for specific strength levels
- Exceptional polishability for precision and optical components
- Resistant to abrasion and deformation under stress
Mechanical Properties (Typical at Room Temperature)
| Property | 440C |
|---|---|
| Tensile Strength (MPa) | 760–1000 |
| Yield Strength (0.2% Proof, MPa) | 450 |
| Elongation (%) | 14 |
| Hardness (Brinell) | 285–600 (depending on condition) |
Why Choose Apar Alloys
At Apar Alloys, we combine technical expertise with a client-first approach. Our vast inventory and strong sourcing network ensure that clients receive certified materials that meet international standards and project-specific requirements.
Immediate Stock Availability
We maintain premium alloy and stainless steel materials, ready for quick dispatch to meet urgent requirements.
Sourced from Trusted Global Mills
All products are procured from reputed international suppliers, ensuring superior quality and reliability.
Rigorous Quality Assurance
Each item undergoes detailed inspections and traceable certifications to maintain consistent, top-grade performance.
Tailored Solutions for Every Project
We offer custom sizing, cutting, and finishing services to fulfill precise client specifications.
Competitive Pricing with Prompt Delivery
Apar Alloys provides cost-effective solutions while ensuring timely and dependable delivery across industries.
Dedicated Client Support
Our professional team provides personalized assistance, fostering trust and long-term relationships with clients.
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 440C.
[Call] +91 98333 89128
301, 3rd floor, A WING, Krishvi Escape, Near Vinay Health Home, Fanaswadi Bhuleshwar, Mumbai - 400002.
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