301 stainless steel
(UNS S30100 | EN 1.4310)
Overview:
Type 301 is the “athlete” of the stainless world — energetic, flexible, and fast to harden. It’s used anywhere parts need both strength and resilience.
Why It’s Popular:
- Excellent fatigue and spring performance.
- Offered in a full range of tempers: from annealed to extra full hard.
- Polishes to a mirror-like finish and forms easily when annealed.
Common Uses:
Springs, clips, seat brackets, couplings, shims, fasteners, aerospace bellows, and flexible ducts.
Temper Options (UTS):
Annealed: 100–125 ksi | 1/4 Hard (AMS 5517): 150 ksi | 1/2 Hard (AMS 5518): 185 ksi | 3/4 Hard (AMS 5519): 200 ksi | Full Hard (AMS 5520): 210–230 ksi | Extra-Full Hard: up to 275 ksi
Available Forms: Coil, strip, sheet, foil, and bar.
Finishes: 2B, BA, or bright-polished spring finish.
Standards: ASTM A240/A666; AMS 5517–5520
301 stainless steel from Source21 is a high performance austenitic stainless steel engineered for applications that demand exceptional strength flexibility and fatigue resistance. Renowned for its rapid work hardening characteristics Type 301 stainless steel is a preferred choice for components that must flex repeatedly while maintaining structural integrity. It delivers outstanding spring performance is available in a wide range of tempers from annealed through extra full hard and polishes to a smooth bright or mirror like finish while remaining easy to form in the annealed condition. Commonly used in springs clips seat brackets couplings shims fasteners aerospace bellows and flexible ducting this grade supports both precision and durability across demanding industries. Source21 supplies 301 stainless steel in coil, strip, sheet, foil, and bar with finishes including 2B, BA, and bright polished spring finish, all produced to meet ASTM A240, ASTM A666, and AMS 5517 through 5520 standards. Reach out to the Source21 team to place an order discuss temper and finish options or get expert support in selecting the right material for your application with confidence backed by quality service and reliable supply.