Stainless Steel 420
Stainless Steel 420
Apar Alloys, a leading Stockist and Supplier of premium stainless steel materials, offers Stainless Steel 420, a martensitic stainless steel grade known for its excellent hardness, strength, and wear resistance. This grade is particularly valued in applications where high mechanical performance and moderate corrosion resistance are essential. Stainless Steel 420 combines the benefits of heat-treatable properties with good polishability, making it ideal for industrial, engineering, and tooling applications.
The controlled carbon content in 420 allows it to achieve impressive hardness after heat treatment, while maintaining adequate corrosion resistance in mildly corrosive environments. It is often preferred for parts requiring superior surface finish, high tensile strength, and durability under stress. With proper heat treatment, Stainless Steel 420 provides a balanced combination of strength and toughness suitable for demanding mechanical uses.
Specifications
| Grade | AISI | UNS | ASTM A276 / A479 | ASTM A182 | EN (W-Nr) | DIN Spec |
|---|---|---|---|---|---|---|
| 420 | AISI 420 | S42000 | A276 / A479 | F420 | 1.4021 | X20Cr13 |
General Characteristics
Martensitic stainless steel with high carbon content
Excellent hardness and wear resistance after heat treatment
Moderate corrosion resistance in atmospheric and freshwater environments
Magnetic in all conditions
Good machinability in the annealed condition
Can be polished to a bright mirror finish
Chemical Composition (nominal) %
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Fe | N |
|---|---|---|---|---|---|---|---|---|---|---|
| SS 420 | 0.15–0.40 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 12.0–14.0 | ≤0.75 | ≤0.60 | Balance | ≤0.10 |
Applications
Cutlery, surgical and dental instruments
Pump shafts and valve parts
Moulds and dies for plastic and rubber
Bearing components and bushings
Turbine blades and nozzles
Automotive and mechanical parts requiring high wear resistance
Advantages
- Excellent hardness and edge retention after heat treatment
- Good resistance to mild corrosion and oxidation
- High tensile and yield strength for load-bearing applications
- Magnetic and easily heat treatable to required hardness levels
- Can be ground, polished, or machined for precision parts
- Cost-effective solution for wear- and abrasion-prone environments
Mechanical Properties (Typical at Room Temperature)
| Property | 420 |
|---|---|
| Tensile Strength (MPa) | 700–850 |
| Yield Strength (0.2% Proof, MPa) | 500 |
| Elongation (%) | 15 |
| Hardness (Brinell) | 250–500 (depending on condition) |
Why Choose Apar Alloys
At Apar Alloys, we combine technical expertise with a client-first approach. Our extensive inventory and robust sourcing network ensure materials meet international standards and project-specific requirements.
Immediate Availability of Stock
We maintain high-quality alloy and stainless steel materials, ready for fast dispatch.
Globally Sourced Premium Materials
All products are procured from reputed international mills, ensuring superior quality and reliability.
Comprehensive Quality Assurance
Every item undergoes strict 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 with prompt and reliable delivery across various industries.
Personalized Client Support
Our dedicated team delivers expert assistance, building 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 420.
[Call] +91 98333 89128
301, 3rd floor, A WING, Krishvi Escape, Near Vinay Health Home, Fanaswadi Bhuleshwar, Mumbai - 400002.
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