SS 420 Round Bars.
Bar stock for machining, shafts, fasteners, valve and pump components. Supplied to ASTM A276 Type 420.
Quick details
| Material grade | SS 420 (UNS S42000) |
|---|---|
| Standard | ASTM A276 Type 420 |
| Type | Bright (cold-drawn, ground), Black (hot-rolled), Peeled and polished, Hex, square and flat bar |
| Diameter | 3 mm to 300 mm; larger forged bar on enquiry |
| Usage / application | Cutlery and blades, Surgical and dental instruments, Plastic moulds |
| Test certificate | EN 10204 3.1 mill test certificate; 3.2 on request |
| Business type | Stockist and supplier |
| Location | Kumbharwada, Mumbai 400004, Maharashtra |
Also searched as: SS 420 round bar, 420 stainless steel round bar, stainless steel 420 round bar, SS 420 rod, ASTM A276 Type 420 round bar, UNS S42000 round bar, 1.4021 round bar
Product information for purchasing teams
SS 420 is a higher-carbon martensitic stainless. After hardening it reaches higher hardness than 410, so it is used for cutlery, surgical and dental instruments, moulds, and wear parts that need a hard edge with some corrosion resistance.
Exact specification, availability and commercial details are confirmed against your enquiry.
SS 420 Round Bars specifications
| Material standard | ASTM A276 Type 420 |
|---|---|
| Grade | SS 420, UNS S42000, W.Nr 1.4021 |
| Diameter | 3 mm to 300 mm; larger forged bar on enquiry |
| Tolerance | h9, h11 or k12 for bright bar; as rolled for black bar |
| Lengths | 3 to 6 m random, or cut pieces |
| Condition | Annealed, solution annealed, hardened and tempered as applicable to the grade |
| Testing | Ultrasonic testing, PMI, hardness and third-party inspection on request |
| Documents | Mill test certificate to EN 10204 3.1; 3.2 on request |
Equivalent grades
| Grade | UNS | Werkstoff Nr. | EN / BS | JIS |
|---|---|---|---|---|
| SS 420 | S42000 | 1.4021 | X20Cr13 | SUS 420J1 |
Chemical composition, %
| Grade | C | Mn | Si | P | S | Cr |
|---|---|---|---|---|---|---|
| SS 420 | ≥ 0.15 | ≤ 1.00 | ≤ 1.00 | ≤ 0.040 | ≤ 0.030 | 12.0 – 14.0 |
Mechanical properties
| Property | Value |
|---|---|
| Tensile strength | Depends on heat treatment |
| Hardness, annealed | ≤ 241 HB |
| Hardness, hardened | Up to about 50 HRC |
Values per ASTM A276. Properties depend on the hardening and tempering cycle.. Confirm against the current edition of the standard and your purchase specification.
Density: 7.74 g/cm³
Types we supply
- Bright (cold-drawn, ground)
- Black (hot-rolled)
- Peeled and polished
- Hex, square and flat bar
Applications
- Cutlery and blades
- Surgical and dental instruments
- Plastic moulds
- Pump shafts and valve parts
Questions buyers ask
Which standard covers SS 420 Round Bars?
SS 420 Round Bars are supplied to ASTM A276 Type 420.
What sizes of SS 420 Round Bars does Steel Impex India supply?
Diameter: 3 mm to 300 mm; larger forged bar on enquiry. Tolerance: h9, h11 or k12 for bright bar; as rolled for black bar. Exact availability is confirmed for each enquiry.
Do SS 420 Round Bars come with a mill test certificate?
Yes. Material is supplied with a mill test certificate to EN 10204 3.1, traceable to the heat number. Third-party inspection to 3.2 can be arranged on request.
What should I send for a SS 420 Round Bars quotation?
Send diameter, tolerance, bright or black, length or cut pieces, quantity and certificate type.
Where is Steel Impex India located?
Steel Impex India is at 231/235, Sant Sena Maharaja Marg, 2nd Kumbharwada, Mumbai 400004, and supplies across India.