302 Stainless Steel for Custom Stampings & Springs

Please note that we do not sell AISI 302 stainless steel or any other materials in raw form. Stainless steel is a material option for custom springs, etc., manufactured by Peninsula Spring.

302 stainless steel is an Austenitic, non-magnetic, extremely tough and ductile stainless steel alloy. AISI 302 annealed stainless steel is highly corrosion resistant and maintains its strength at high temperatures up to 550°F (288°C). Additionally, 302 stainless steel is non-magnetic in the annealed condition and cannot be further hardened by heat treatment. As an added benefit both the hardness and tensile strength of AISI 302 can be increased by cold working.

AISI 302 Stainless Steel Sheet

Annealed Stainless Steel Chemical & Physical Properties

The physical and chemical properties of AISI 302 stainless steel stampings are as follows:

  • Cr: 17.0 - 19.0%
  • Ni: 8.0 - 10.0%
  • Minimum tensile strength: psi x 103 185-230
  • Modulus of elasticity: psi x 106 28
  • Maximum operating temperature 550°F (288°C)
  • Rockwell hardness: C35-45

AISI 302 Stainless Steel Applications

AISI 302 stainless steel is ideal for custom flat springs and custom sheet metal stampings that require corrosion resistance and high temperatures capabilities. Common applications for AISI 302 annealed stainless steel, include:

  • Springs
  • Stampings
  • Wire Forming
  • Sanitary
  • Food & Beverage
  • Cryogenic
  • Pressure-Containing

AISI 302 Stainless Steel Common Trade Names

Annealed 302 stainless steel is known by numerous names, some of the more common labels, include:

  • UNS S30200
  • ASTM A666
  • AISI 302/304
  • AMS 5513
  • AMS 5515
  • AMS 5516
  • QQ-S-766
  • SAE J230

Heat Treating AISI 302 Stainless Steel

Heat treatments are used to alter the physical and mechanical properties of metal without changing its shape. They are essential processes in metal manufacturing which increase desirable characteristic of metal, while allowing for further processing to take place.

AISI 302 stainless steel is delivered in pre-tempered condition, and, no further hardening can be achieved through heat treating.  As needed, completed flat springs and sheet metal stampings can undergo a stress-relieving process.

The Annealing Process

Annealing AISI 302 involves heating steel to a specified temperature and then cooling at a very slow and controlled rate. Annealing is commonly used to:

  • Soften a metal for cold working
  • Improve machinability
  • Enhance electrical conductivity

Annealing also restores ductility. During cold working, the metal can become hardened to the extent that any more work will result in cracking. By annealing the metal beforehand, cold working can take place without any risk of cracking, as annealing releases mechanical stresses produced during machining or grinding.

Contact Peninsula Spring Today

Peninsula Spring is a premium provider of the finest AISI 302 stainless steel available. Our annealed stainless steel exhibits good corrosion resistance as well as excellent spring properties to fulfill your toughest project requirement needs.

Contact us for more information on our AISI 302 stainless steel sheet and strip materials for your project needs, or request a quote today.

Please note that we do not sell annealed 302 stainless steel or any other materials in raw form. 302 stainless steel sheet and strip material options for custom springs, etc., manufactured by Peninsula Spring.