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301 stainless steel strip is an typical austenitic stainless steel grade,It is famous for its high work hardening rate. cold rolling made SS301 internal micro-structure converts from austenite into martensite. This phase transformation greatly boosts this material tensile strength and hardness .
There have four type temper treatment during production for varies application.
| Stainless steel 301 Properties | Annealed | 1/4 Hard | 1/2 Hard | 3/4 Hard | Full Hard |
| Density | 7.89 g/cm³ (0.285 lb/in³) | 7.89 g/cm³ | 7.89 g/cm³ | 7.8 g/cm³ | 7.89 g/cm³ |
| UTS | 586 MPa (85 ksi) | 965 MPa (140 ksi) | 1,172 MPa (170 ksi) | 1,350 MPa (200 ksi) | 1,448 MPa (210 ksi) |
| Yield Strength | 228 MPa (33 ksi) | 586 MPa (85 ksi) | 827 MPa (120 ksi) | 1,060 MPa (150 ksi) | 1,103 MPa (160 ksi) |
| Shear | 414 MPa (60 ksi) | 627 MPa (91 ksi) | 758 MPa (110 ksi) | 820 MPa (120 ksi) | 827 MPa (120 ksi) |
| Shear Modulus | 76 GPa (11,000 ksi) | 76 GPa | 76 GPa | 77 GPa | 76 GPa |
| Fatigue | 214 MPa (31 ksi) | 427 MPa (62 ksi) | 552 MPa (80 ksi) | 600 MPa (88 ksi) | 545 MPa (79 ksi) |
| Rockwell/Brinell | B82 / 190 | B106 / 294 | B110 / 350 | B110 / 410 | B115 / 440 |
| Elongation) | 46% | 28% | 20% | 13% | 7.40% |
| Modulus | 193 GPa (28,000 ksi) | 193 GPa | 193 GPa | 200 GPa | 193 GPa |
| Poisson's Ratio | 0.28 | 0.28 | 0.28 | 0.28 | 0.28 |
| Melting Point | 1,399-1,421 °C | 1,399-1,421 °C | 1,399-1,421 °C | 1,400-1,420 °C | 1,399-1,421 °C |
| Specific Heat | 460 J/(kg·K) | 460 J/(kg·K) | 460 J/(kg·K) | 480 J/(kg·K) | 460 J/(kg·K) |
| Thermal Cond | 15.6 W/(m·K) | 15.6 W/(m·K) | 15.6 W/(m·K) | 16 W/(m·K) | 15.6 W/(m·K) |
| Electrical Conductivity | 2.4% IACS | 2.4% IACS | 2.4% IACS | 2.4% IACS | 2.4% IACS |
| Application Scenarios | Deep drawing parts, complex bent components, spun parts (e.g., kitchenware, sinks). | Structural parts, railway vehicle components, elastic clips, washers, hose clamps. | Automotive clips, seat brackets, structural connectors, battery connectors, electronic terminals. | Automotive clips (commonly used), high-fatigue springs, seat spring mechanisms, precision electronic contacts. | Springs, clock springs, steel strips, strapping bands, high-strength cables, metal blades. |
| Processing Recommendations | Excellent formability; suitable for deep drawing and spinning. May require intermediate annealing due to rapid work hardening. | Good formability; suitable for moderate bending and stamping. | Moderate bending capability; attention to springback compensation is required. | Simple forming and moderate bending. | Large bend radii required; avoid severe bending (>90°) to prevent cracking. Welding is difficult; spot welding is recommended. |
Selecting the right thickness for 301 stainless steel coil is not merely about finding a measurement—it is about matching the material's mechanical properties to the specific stress and formability requirements of your design. Fundamentally, this is a trade-off between elastic flexibility and structural rigidity.
301 stainless steel strip with thin thickness are commonly selected for springs, 301 stainless steel clips and precision stamped components and sealing packing machine, while higher thickness AISI 301 Stainless Steel can be used where request strong structural rigidity.
Thin strip from 0.1 mm to 0.2 mm are used for 301 stainless steel springs, electronic contacts, and small battery connectors. These parts must be very precise and handle repeated stress.
Thicker strip from 0.3 mm and 0.5 mm are the best choice for automotive clips, structural connectors, and general springs. They give a good balance between high strength and enough flexibility for moderate bending and stamping.
Ultimately,How to choose301 stainless steel strip thickness for springs be driven by the required spring rate, the severity of the forming operation, and the overall load the component must endure.
When talking about 301 stainless stee, we always remind 304 stainless steel, So how to choose good material between two material, While the question is not which grade is better. Both are austenitic stainless steels and both are used in many applications. The real difference is what each grade is designed to do best.
301 stainless steel strip is known for its higher work-hardening capability. When it is cold rolled, its strength increases quickly, allowing suppliers to offer it in a range of tempers—annealed, 1/4 hard, 1/2 hard, 3/4 hard, and full hard. This makes 301 a natural fit for spring applications, including springs, spring contacts, clips, retainers, and precision stamped parts that need elasticity, fatigue resistance, and high strength in thin sections.
| Quick comparison | ||
| Design focus | 301 Stainless Steel Strip | 304 Stainless Steel Strip |
| Main behavior | Higher work-hardening capability | Broader general-purpose corrosion resistance |
| Strength | Can be supplied in tempers up to full hard | Usually supplied annealed; not intended for high spring tempers |
| Typical applications | Springs, clips, contacts, straps, precision stamped parts | Kitchenware, food equipment, architectural, chemical, medical, general fabrication |
| Corrosion resistance | Good in many environments | Often selected when corrosion resistance is the primary concern |
| Formability | Good in annealed condition; more limited in hard tempers | Excellent formability in annealed condition |
| Welding | Weldable, but hard tempers may need extra care | Generally easier to weld |
| Magnetic response | May become magnetic after cold work | Generally non-magnetic when annealed; slightly magnetic after cold work |
304 stainless steel is usually chosen for broader general-purpose corrosion-resistant applications. This material have higher chromium 17.0% ~ 19.0% and nickel content 8.0% ~ 11.0% , it provides strong corrosion resistance in industrial environments,Such as Chemicla industry, oil&Gas, and power plant. along with excellent formability and weldability. It is widely used in food processing equipment, kitchenware, architectural trim, medical devices, and general fabrication where corrosion resistance and ease of forming matter more than high spring strength.
In our normal application, both grades can work. The right choice depends on the required temper, the forming operation, the corrosion environment, and the final mechanical performance—not on a simple ranking of the material.
For more 301 stainless steel description,pls visit:301 Stainless Steel Strip_XI'AN MONO TECHNOLOGY CO..LTD.
