420 Stainless Steel Hex Bar
Stellanox Steel supplies high-strength 420 Stainless Steel Hex Bars, ideal for applications requiring excellent hardness, wear resistance, and edge retention. This martensitic stainless steel hex bar can be heat treated to achieve high mechanical strength, making it perfect for surgical tools, cutlery, fasteners, and machine parts used in high-abrasion environments.
With a polishable surface and strong mechanical performance, 420 hex bars are a preferred choice for precision-engineered components.
What is 420 Stainless Steel Hex Bar?
420 Stainless Steel Hex Bar is a six-sided bar made from high-carbon martensitic stainless steel with 12–14% chromium content. It is hardenable through heat treatment and provides moderate corrosion resistance along with high tensile strength and polishability.
420 hex bars are widely used in mechanical parts requiring sharp edges, tight tolerances, and impact resistance, such as tools, dies, and medical instruments.
| Products |
|---|
|
Stainless Steel |
|
Carbon Steel |
|
Duplex Stainless Steel |
|
Super Duplex Stainless Steel |
|
Alloy Steel |
|
Titanium |
|
Hastelloy |
|
Inconel |
|
Monel |
|
Aluminium |
|
Copper |
|
Pure Nickel |
|
Flanges |
|
Forged Fittings |
|
Valves |
|
Fasteners |
Key Features of 420 Stainless Steel Hex Bar
- High Hardness Potential: Achieves up to 50 HRC or more after heat treatment.
- Excellent Wear Resistance: Ideal for blade edges, tool parts, and bearings.
- Moderate Corrosion Resistance: Suitable for dry and lightly corrosive environments.
- Polishable Surface: Can be mirror-finished for medical and aesthetic applications.
- Magnetic: Magnetic in both annealed and hardened states.
- Good Machinability: Easily ground, turned, or cut to exact specifications.
Specification Chart – 420 Stainless Steel Hex Bar
| Property | Details |
|---|---|
| Grade | 420 (UNS S42000) |
| Standards | ASTM A276, ASTM A479, EN 10088-3 |
| Size Range (Across Flats) | 6 mm – 75 mm |
| Length | Up to 6 meters or custom cut |
| Finishes | Bright, Peeled, Polished, Black |
| Conditions | Annealed, Hardened, Tempered |
Chemical Composition – 420 Stainless Steel Hex Bar
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 12.0 – 14.0 |
| Carbon (C) | 0.15 – 0.40 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Iron (Fe) | Balance |
Mechanical Properties – 420 Stainless Steel Hex Bar (Hardened)
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 700 – 1000 |
| Yield Strength (MPa) | ≥ 345 |
| Elongation (%) | ≥ 15 |
| Hardness (HRC) | 50 – 55 (Hardened) |
| Density | 7.75 g/cm³ |
Equivalent Grades – 420 Stainless Steel Hex Bar
| Standard | Grade |
|---|---|
| ASTM | 420 |
| EN | 1.4021 |
| JIS | SUS 420J1 / 420J2 |
| UNS | S42000 |
| DIN | X20Cr13 |
Applications of 420 Stainless Steel Hex Bar
- Surgical and Medical Instruments
- Knife and Scissor Blades
- Tool and Die Manufacturing
- Fasteners and Screws
- Cutlery and Decorative Components
- Bearing Sleeves and Shafts
Benefits of 420 Stainless Steel Hex Bar
- High hardness and wear resistance after heat treatment
- Fully magnetic in all conditions
- Easily polished for medical and precision tools
- Moderate corrosion protection for indoor or dry use
- Long-lasting performance in dynamic or high-friction settings
- Reliable choice for blade-grade and structural applications
2025 Stellanox Steel |