301 stainless steel is a chromium-nickel austenitic stainless with elevated carbon content (0.15% max) specifically designed to achieve high strength through cold working. Available in various tempers from 1/4 hard to full hard, it offers tensile strengths up to 1276 MPa (185 ksi) while maintaining good corrosion resistance. This alloy is widely used for structural components in rail cars, highway trailers, aircraft frames, and spring applications requiring a combination of strength, formability, and corrosion resistance .
1. Product Specifications & Physical DataZYTC Alloy supplies 301 stainless steel in comprehensive mill forms for transportation, automotive, and industrial applications requiring verified mechanical properties. Available Forms: Sheet, strip, plate, bar, wire, and custom configurations . Specifications: ASTM A240, ASTM A666, EN 10088-2 1.4310, UNS S30100 .
| Chemical Composition (Weight %) | 301 Stainless Specification |
|---|
| Chromium (Cr) | 16.0 - 18.0 | | Nickel (Ni) | 6.0 - 8.0 | | Carbon (C) | 0.15 max. | | Manganese (Mn) | 2.0 max. | | Silicon (Si) | 1.0 max. | | Phosphorus (P) | 0.045 max. | | Sulfur (S) | 0.030 max. | | Nitrogen (N) | 0.10 max. | | Iron (Fe) | Balance |
| Physical Properties | Metric | Imperial |
|---|
| Density | 7.88 - 8.0 g/cm³ | 0.285 - 0.289 lb/in³ | | Modulus of Elasticity | 193 - 200 GPa | 28.0 - 29.0 × 10⁶ psi | | Poisson's Ratio | 0.27 - 0.30 | 0.27 - 0.30 | | Thermal Conductivity (RT) | 16.2 W/m·K | 112 BTU·in/hr·ft²·°F |
| Mechanical Properties | Condition | Metric | Imperial |
|---|
| Tensile Strength (min.) | Annealed | 515 MPa | 75 ksi | | Yield Strength (min.) | Annealed | 205 MPa | 30 ksi | | Elongation | Annealed | 40% | 40% | | Tensile Strength (min.) | 1/4 Hard | 862 MPa | 125 ksi | | Yield Strength (min.) | 1/4 Hard | 517 MPa | 75 ksi | | Elongation | 1/4 Hard | 25% | 25% | | Tensile Strength (min.) | 1/2 Hard | 1034 MPa | 150 ksi | | Yield Strength (min.) | 1/2 Hard | 758 MPa | 110 ksi | | Elongation | 1/2 Hard | 18% | 18% | | Tensile Strength (min.) | 3/4 Hard | 1207 MPa | 175 ksi | | Yield Strength (min.) | 3/4 Hard | 931 MPa | 135 ksi | | Elongation | 3/4 Hard | 12% | 12% | | Tensile Strength (min.) | Full Hard | 1276 MPa | 185 ksi | | Yield Strength (min.) | Full Hard | 965 MPa | 140 ksi | | Elongation | Full Hard | 9% | 9% |
2. Fabrication & Material ComparisonHeat Treatment: Solution Annealing: 1010-1120°C (1850-2050°F), rapid cool (water quench) Intermediate Annealing: Lower temperature range for cold worked material Stress Relieving: 400-600°C (750-1100°F) as needed
Hot Working: Forge and roll at 1200-900°C (2190-1650°F); avoid prolonged heating in sensitization range . Cold Working: Can be cold rolled to various tempers; work-hardening rate high; intermediate annealing may be required for severe deformation . Machining: Good machinability in annealed condition; work-hardening requires rigid setups and sharp tools . Welding: Good weldability using TIG, MIG, and resistance methods; filler metal matching recommended . Material Comparison: vs. 304 Stainless: Higher carbon enables higher strength through cold working; similar corrosion resistance . vs. 302 Stainless: Similar composition; 301 offers higher work-hardening rate . vs. 201 Stainless: Higher nickel content provides better corrosion resistance and formability . vs. 17-7PH: Lower cost; strength achieved through cold work vs. heat treatment .
3. ApplicationsTransportation: Rail car structural components, highway trailer parts, air frame sections Automotive: Wheel covers, wiper blade clips and holders, stove element clips Springs: Toaster springs, retaining clips, constant-force springs Architectural: Curtain walls, screen frames, structural trim Industrial: Conveyor components, material handling equipment Consumer Products: Kitchen appliances, hardware, fasteners
Contact ZYTC Alloy for certified 301 stainless steel materials with complete traceability, ASTM/EN specifications, technical datasheets, and competitive pricing on standard sheet, strip, and bar sizes. Email: daisy@zytcsteel.com WhatsApp/WeChat: +86 17335753350 |
