Stainless Steel 420B/420C
Stainless Steel 420B/420C
Stainless Steel 420B/420C is a high-carbon martensitic stainless steel grade known for its excellent hardness, superior wear resistance, and moderate corrosion resistance. Designed to deliver exceptional performance after heat treatment, it is ideal for applications that demand high strength, edge retention, and resistance to abrasion. With its ability to maintain sharpness and mechanical integrity under demanding conditions, this grade is widely used in the cutlery, surgical, and industrial tooling sectors.
At Apar Alloys, we are a reliable stockist and supplier of SS 420B/420C materials, offering products sourced from reputed global mills. Our comprehensive inventory includes bars, sheets, plates, and round bars available in multiple sizes and surface finishes to suit diverse industrial applications. Every product undergoes stringent inspection and testing to ensure consistent quality, performance, and durability.
Specifications
| Grade | AISI | UNS | ASTM A276 / A479 | ASTM A182 | EN (W-Nr) | DIN Spec |
|---|---|---|---|---|---|---|
| 420B | AISI 420B | S42000 | ASTM A276 / A479 | ASTM A182 | 1.4021 | X20Cr13 |
| 420C | AISI 420C | S42000 | ASTM A276 / A479 | ASTM A182 | 1.4028 | X30Cr13 |
General Characteristics
High-carbon martensitic stainless steel
Excellent hardness and wear resistance after heat treatment
Moderate corrosion and oxidation resistance
Good mechanical strength and edge retention
Magnetic in both annealed and hardened conditions
Suitable for polishing and mirror finish applications
Chemical Composition (nominal) %
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | Fe | N |
|---|---|---|---|---|---|---|---|---|---|---|
| SS 420B | 0.20–0.30 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 12.0–14.0 | ≤0.75 | ≤0.60 | Balance | ≤0.10 |
| SS 420C | 0.30–0.40 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 12.0–14.0 | ≤0.75 | ≤0.60 | Balance | ≤0.10 |
Applications
Cutlery, knives, and surgical instruments
Pump shafts, valve parts, and nozzles
Bearings, bushings, and wear-resistant tools
Moulds, dies, and precision machine components
Measuring instruments and industrial blades
Components requiring high hardness and polishability
Advantages
- Superior hardness and wear resistance
- Excellent polishability and surface finish
- Moderate corrosion and oxidation resistance
- Good strength and dimensional stability
- Magnetic and hardenable through heat treatment
- Reliable performance in high-friction environments
Mechanical Properties (Typical at Room Temperature)
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 700 – 950 |
| Yield Strength (MPa) | 450 |
| Elongation (%) | 15 |
| Hardness (Brinell) | 200 – 250 HB |
Why Choose Apar Alloys
At Apar Alloys, we merge technical expertise with a client-centric approach to deliver high-grade martensitic stainless steel products that meet global standards. Our efficient supply chain and robust quality management ensure reliability and precision in every supply.
Reliable Stockist & Supplier
We maintain a comprehensive stock of SS 420B/420C materials, ensuring quick availability and timely dispatch.
Sourced from Trusted Global Mills
All materials are procured from certified and reputed international manufacturers for guaranteed quality and traceability.
Stringent Quality Checks
Each batch undergoes thorough inspection and certification for chemical, mechanical, and dimensional compliance.
Custom Sizing & Cutting
We provide cutting, finishing, and sizing services tailored to project-specific requirements.
Competitive Pricing & Timely Delivery
Apar Alloys ensures value-driven pricing with prompt delivery across various industries.
Dedicated Client Support
Our expert team offers end-to-end assistance, ensuring a smooth and efficient buying experience.
Get in Touch
Contact Us
Looking for a trusted source for SS 420B/420C Stainless Steel materials? Connect with Apar Alloys today for quotations, expert consultation, and customized stainless steel supply solutions.
[Call] +91 98333 89128
301, 3rd floor, A WING, Krishvi Escape, Near Vinay Health Home, Fanaswadi Bhuleshwar, Mumbai - 400002.
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