AISI 305 UNS S30500 1.4303 stainless steel is comprised of 17% to 19% chromium, 12% carbon, 2% maximum manganese, 10% to 13% nickel with traces of phosphorus sulfur and silicon, with the balance being iron. It was designed for maximum formability, exhibiting good strength and corrosion resistance. Grade 305 has the lowest work and strain hardening rates of all the austenitic stainless steel. This low work hardening rate makes cold working one of the design strengths of 305.
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 1.4303 | S30500 | Delivery from the stock, in stock |
| Applications | Any application requiring maximum formability such as spun or deep drawn eyelets, barrels, shells, cold headed rivets or screws will work well. |
| Machinability | Slow speeds and heavy feeds are recommended to combat the material’s tendency to glaze during machining. |
| Welding | Most of the common fusion and resistance methods can be used here. Filler metal, if necessary, should be AWS E/ER308. Oxyacetylene welding is not recommended. |
| Hot Working | Forging, heading and other hot working should follow uniform heating to 2100-2300 °F (1149-1260 °C). Rapid cooling is necessary to attain maximum corrosion resistance in finished parts. |
| Cold Working | Cold work is one of the design strengths of this alloy. It can be drawn, spun, headed and blanked readily due primarily to its low work hardening rate. |
| Annealing | 1850-2050 °F (1010-1121 °C) followed by rapid cooling. |
This alloy does not respond to heat treatment. Cold work will cause an increase in both hardness and strength.
Principal Design Features
One of the most widely used precipitation hardening grades in the business. While soft and ductile in the solution annealed condition, it is capable of high properties with a single precipitation or aging treatment. Characterized by good corrosion resistance, high harness, toughness and strength.
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