AISI 420 Sheet TISCO 20Cr13 SUS420J1Stainless Steel Plate
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Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of aisi 420 sheet tisco 20cr13 sus420j1stainless steel plate in China. If you're going to wholesale high quality aisi 420 sheet tisco 20cr13 sus420j1stainless steel plate made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
AISI 420 stainless steel (SS420) is a straight chromium martensitic stainless steel grade with certain wear resistance, corrosion resistance and high hardness.
SS 420 stainless steel physical properties are listed in the table below such as density, melting point, specific heat, electrical resistivity, elastic modulus, thermal conductivity, and coefficient of thermal expansion (CTE).
Datasheet 2, 420 stainless steel properties – 1.
| SS 420 Physical Properties | |
| Density, g/cm3 (lb/in.3) | 7.8 (0.28) |
| Melting point, °C (°F) | 1450-1510 (2650-2750) |
| Specific heat capacity, J/kg·K (Btu/lb·°F) | 460 (0.11) at 0-100 °C (32 to 212 °F) |
| Electrical resistivity, μΩ·m | 0.55 at 20 °C |
| Elastic modulus (Modulus of elasticity), GPa (106 psi) | 200 (29) |
| Thermal conductivity, W/m·K (Btu/ft·h·°F) | 24.9 (14.4), at 100 °C (212 °F) |
| Coefficient of thermal expansion, μm/m·°C (μin./in. ·°F) | 10.3 (5.7), at 0-100 °C (32-212 °F) |
| 10.8 (6.0), at 0-315 °C (32-600 °F) | |
| 11.7 (6.5), at 0-538 °C (32-1000 °F) | |
Type 420 stainless steel heat treatment includes annealing, hardening, tempering and stress relief. Preparation for heat treatment includes precleaning, preheating, atmosphere protection, salt bath, and hydrogen embrittlement.
Precleaning: All workpieces of SS420 and fixtures must be thoroughly cleaned, such as oil, sweat and other stains on the surface of the workpiece.Preheating: The thermal conductivity of type 420 stainless steel is usually lower than that of carbon steel. When heating rapidly, the workpiece is easily deformed and cracked. Therefore, preheating is recommended. The preheating temperature is generally 760-790 °C (1400-1450 °F). Heavy-duty parts can be preheated in two stages: Preheat at 540 °C (1000 °F) firstly, and then heat to 790 °C (1450 °F).Atmosphere protection: Austenitizing temperature 1010 °C (1850 °F), dew-point temperature: 10-12 °C (50-54 °F) for AISI 420 wrought martensitic stainless steel.Salt bath: Bath salts give 420 grade stainless steel (SS 420) parts a better result.Hydrogen embrittlement: Hydrogen embrittlement is a serious problem with 420 steel.
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