Steel House India is a premier manufacturer, supplier, and stockist of high-performance ASTM A276 AISI 440C stainless steel round bars in India. Engineered as a high-carbon martensitic stainless steel, Grade 440C is renowned for its exceptional hardness and superior wear resistance. With a carbon content ranging from 0.95% to 1.20% and a high chromium concentration of 16% to 18%, this grade achieves unmatched levels of surface hardness—reaching up to 58-60 HRC after proper heat treatment. This makes 440C the definitive material choice for critical industrial applications requiring prolonged life under extreme friction, abrasive wear, and high-pressure contact conditions.
Our comprehensive inventory is meticulously sourced from premium VOD/AOD refined billets to ensure metallurgical purity and long-term consistency. While our expertise in the high-hardness 440C grade is unmatched, we maintain a robust supply chain for various other industrial grades to meet your specific design parameters, including the globally utilized AISI 304 Stainless Steel Round Bar for general structural needs, and the versatile, high-strength AISI 431 Stainless Steel Round Bar for specialized marine and engineering applications. With our centralized distribution hub in Mumbai, we provide pan-India delivery, ensuring that your procurement needs are met with precision, competitive pricing, and industry-leading transit times.
Bulk 440C Stock
High-Hardness 440C Bars
Ready-Stock 440C Inventory
Chemical Composition of AISI 440C
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.95 – 1.20 |
| Chromium (Cr) | 16.00 – 18.00 |
| Manganese (Mn) | 1.00 Max |
| Silicon (Si) | 1.00 Max |
| Phosphorus (P) | 0.04 Max |
| Sulfur (S) | 0.03 Max |
Mechanical Properties
| Property | Typical Value |
|---|---|
| Hardness (Heat Treated) | 58 – 60 HRC |
| Tensile Strength (Annealed) | ~700 MPa |
| Yield Strength (Annealed) | ~380 MPa |
| Modulus of Elasticity | 200 GPa |
Specifications
Standards: ASTM A276, ASTM A582, ASME SA276.
Testing: PMI, Ultrasonic, Hardness, and Tensile testing.
Documentation: EN 10204 3.1 Mill Test Certificate (MTC).
Surface Finish: Black, Bright, Peeled, Ground, and Polished.
Size Range
We offer an extensive, ready-to-dispatch inventory:
Round Bar: 5mm to 300mm diameter.
Custom Sizes: Precision cutting and processing available per your
drawings.
Equivalent Grades
| Standard | Designation |
|---|---|
| USA (AISI) | 440C |
| Germany (DIN) | 1.4125 |
| Europe (EN) | X105CrMo17 |
| Japan (JIS) | SUS 440C |
Grade Comparison
Understanding the material differences is critical for high-performance engineering. Comparing the hardness-focused 440C with standard structural grades helps ensure your component choice aligns perfectly with performance requirements.
| Feature | Grade 440C | Grade 304 | Grade 431 |
|---|---|---|---|
| Classification | Martensitic | Austenitic | Martensitic |
| Hardness | Very High | Low | Moderate-High |
| Wear Resistance | Superior | Low | Good |
| Primary Use | Tools/Bearings | Structure | Marine/Shafts |
For applications requiring less hardness but higher general corrosion resistance, many of our clients often select the AISI 304 Stainless Steel Round Bar. Conversely, for projects where high strength and good corrosion resistance are required without the extreme hardness of 440C, the AISI 431 Stainless Steel Round Bar offers a more balanced mechanical profile for engineering shafts and bolts.
Applications
■ Bearings & Races: High-load ball and roller bearings.
■ Cutting Tools: Surgical instruments, industrial blades, and
knives.
■ Valves & Seats: Components requiring resistance to high-pressure
friction.
■ Precision Parts: Nozzles, pump components, and wear-resistant
liners.
Advantages & Features
■ Extreme Hardness: Capable of reaching 60 HRC through quenching
and tempering.
■ Exceptional Wear Resistance: Ideal for parts subject to abrasive
contact and sliding friction.
■ Dimensional Stability: Retains shape under high-stress mechanical
loads.
■ Corrosion Resistance: Good resistance to moisture and mild
chemical environments when polished.
Pricing & Stock Availability
Starting Price: ₹265 to ₹600 per/Kg (subject to current market rates, size, quantity, and alloy surcharges).
📊 Request an Instant Commercial Quote: Metal market pricing fluctuates based on daily raw chromium and alloy surcharges. Our commercial team adapts quotes dynamically to offer you the best value based on order tonnage and custom processing requirements. Contact our Mumbai sales office today for a real-time bulk contract quotation.
Why Choose Steel House India
■ Extensive Stock: Ready-to-ship inventory in Mumbai to minimize
project lead times.
■ Certified Quality: 100% material traceability with EN 10204 3.1
certification.
■ Pan-India Logistics: Rapid, secure transit to your manufacturing
site.
■ Technical Expertise: Dedicated support for heat treatment and
material selection.
Frequently Asked Questions (FAQ)
1. What is the maximum hardness of AISI 440C after heat treatment?
AISI 440C can achieve a high surface hardness of 58–60 HRC after proper quenching and tempering, making it ideal for high-wear industrial applications.
2. Is AISI 440C stainless steel suitable for marine environments?
While AISI 440C offers good corrosion resistance, it is primarily chosen for its extreme hardness. For highly corrosive marine environments, AISI 316 or 431 are often preferred, whereas 440C is better suited for wear-intensive parts.
3. Why is 440C preferred for industrial cutting tools?
440C is a high-carbon martensitic grade that retains a superior cutting edge and provides exceptional resistance to abrasive wear, making it the industry standard for high-performance blades and cutters.
4. Can I weld AISI 440C round bars?
Welding AISI 440C is generally discouraged due to its high carbon content, which makes it prone to cracking; it is typically joined via mechanical fasteners or specialized brazing if required.
5. Is 440C stainless steel magnetic?
Yes, because 440C is a martensitic stainless steel, it is strongly magnetic in all heat-treated conditions.
6. Does Steel House India provide MTC with 440C supplies?
Yes, we provide an EN 10204 3.1 Mill Test Certificate (MTC) with every delivery to ensure full chemical and mechanical traceability for your project compliance.
7. How do I get a real-time price quote for 440C in India?
You can get an instant quote by emailing your material specifications and tonnage requirements to sales@steelhouseindia.com; our team will contact you within two business hours.
8. Does Steel House India offer custom cutting for AISI 440C?
Yes, we offer precision cutting and custom-sized fabrication to match your specific engineering drawings, helping you reduce material waste and machining time.
Request a Callback from Our Sourcing Desk
This commercial product page is managed by Steel House India. For immediate product inquiries, direct bulk contracts, or to request a technical consultation, please forward your detailed material requirements to sales@steelhouseindia.com. Once received, a senior technical sourcing officer will review your specifications and contact you within two business hours to finalize your order.