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Heanjia Super-metals Co., Ltd.
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Payment Terms: | T/T,L/C,D/A,D/P,WU |
Place of Origin: | Hebei, China (Mainland) |
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Carbon | 0.15 max |
Chromium | 17 - 19 |
Iron | Balance |
Manganese | 2 max |
Nickel | 8 - 10 |
Phosphorus | 0.045 max |
Silicon | 1 max |
Sulphur | 0.03 max |
Density (lb / cu. in.) | 0.287 |
Specific Gravity | 7.94 |
Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) | 0.12 |
Electrical Resistivity (microhm-cm (at 68 Deg F)) | 432 |
Melting Point (Deg F) | 2590 |
Modulus of Elasticity Tension | 28 |
Principal Design Features | Type 302 is a slightly higher carbon version of type 304, most commonly found in strip and wire forms. While still used in a variety of industries, many applications have shifted to 304 and 304L due to advances in melting technology, availability and cost. |
Applications | Primarily used in the stamping, spinning and wire forming industry. This alloy is formed into all types of washers, springs, screens and cables. |
Machinability | Slow speeds and high feeds will overcome this alloys tendency to work harden. Due to gummy chips, it is recommended that chip breakers are used on all tooling. |
Welding | This alloy can best be welded by resistance or shielded fusion methods. Filler metals should be AWS E/ER308 or 312. Post weld annealing dissolves the chromium carbide and is recommended for maximum resistance to intergranular attack. |
Forging | Commence forging at 2100-2300 F(1149-1260 C). Do not forge below 1700 F (927 C). |
Hot Working | Uniform heating to 2100 F(1149 C) will allow this allow to be forged, upset and headed successfully. Do not work 302 below 1700 F (927 C). Forgings should be fully annealed after all operations to reattain maximum corrosion resistance. |