Louis Metals offers Stainless Steel 420 Bars and Rods produced in Houston, USA, renowned for their tooling and mechanical uses. SS 420 is a martensitic stainless steel with excellent corrosion resistance and high heat-treated hardness. Our bars find extensive use in tool making, surgical equipment, and industrial parts. We supply cut lengths per your order and heat-treated according to your project specifications.
Stainless Steel 420 has 12.0–14.0% Chromium and 0.15–0.40% Carbon. It provides excellent hardness up to 50 HRC and moderate resistance to corrosion. The tensile strength varies between 700 and 1000 MPa based on the heat treatment. It is magnetic and can be hardened using quenching and tempering. Due to its machinability and wear resistance, it can be used in precision applications.
| Specification | ASTM A276/ A479, ASME SA276/SA479 |
|---|---|
| Grade | Stainless Steel 420 (UNS S42000) |
| Flat bar size | 1/2” to 10” in thickness range of 2mm to 150mm |
| Square bar size | 18mm – 47mm (11/16″ to 1-3/4″) |
| Round bar size | Outside Diameter in the range of 4mm to 500mm |
| Hex Bar size | 18mm – 57mm (11/16″ to 2-3/4″) |
| Bright Bar | Outside Diameter in the range of 4mm to 100mm |
| Channel Bar | 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
| Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Billet Size | 1/2″ to 495mm Diameter |
| Angle bar size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Rectangular bar Size | 33 x 30mm to 295 x 1066mm |
| Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Surface | Cold Drawn, Bright, Sand Blasting Finished, Hot Rolled Pickled, Hairline, Polished |
| Condition | Hardened & tempered, annealed |
| Technique | 420 Stainless Steel Cold Drawn, Hot Rolled, Forged Round Bar, Rod, Cold Rolled |
| Processing | Bar cutting to 650mm |
| Section | 3.0 to 12.0mm thickness |
| Form | Precision Ground Bar, Flat Bar, Square, Round, Half Round Bar, Rod, Rectangle, Hex (A/F), T-Bar, Channel Bar,Blocks, Round Rod, Threaded, Profiles, Billet, Ingot, I/H Bar, Forging, Rings, Hollow, Triangle etc. |
| Our 420 Stainless Steel Round bar conforms to NACE MR0175/ISO 15156 | |
| Grade | C | Mn | Si | P | S | Cr | |
| 420 | min. | – | – | – | – | – | 12.0 |
| max. | 0.15 | 1.0 | 1.00 | 0.04 | 0.03 | 14.0 | |
| Grade | Tensile Strength (ksi) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (ksi) min | Hardness |
| 420 | 95,000 | 25 | 50,000 | 175 |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 420 | 1.4021 | S42000 | SUS 420 J1 | 420S29 | – | – | FeMi35Cr20Cu4Mo2 |
Stainless Steel 420 Bars and Rods are known for their excellent hardness, corrosion resistance, and wear resistance. They are a high-carbon steel that can be heat-treated for maximum hardness and are ideal for applications that require strength and durability, such as cutlery, surgical instruments, and valve parts.
Stainless Steel 420 has higher carbon content compared to other grades like 304 or 316, which allows it to be hardened through heat treatment. This makes it particularly suitable for applications that demand high strength, hardness, and wear resistance, although it may not offer the same corrosion resistance as other austenitic grades.
Stainless Steel 420 is commonly used in the manufacturing of cutlery, surgical instruments, automotive components, and valves due to its excellent hardness, strength, and resistance to corrosion.
SS 420 Bars and Rods find applications in knife blades, cutting tools, surgical instruments, molds, and shafts. Due to the ability of this steel to withstand wear while being polishable, it is well suited for applications such as optical instruments and decorative fittings. SS 420 is suitable for use in moderately corrosive conditions and finds large-scale applications in food processing, textile, and paper industries.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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