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ASME SA268 ASTM A268 TP430 Stainless Steel Seamless Tube For Power Plant
Chemical Composition
Grade: | TP410 | TP430 | TP439 |
UNS | S41000 | S43000 | S43035 |
C, Max | 0.15 | 0.12 | 0.07 |
Mn,Max | 1 | 1 | 1 |
P, Max | 0.04 | 0.04 | 0.04 |
S, Max | 0.03 | 0.03 | 0.03 |
Si, Max | 1 | 1 | 1 |
Ni | … | … | 0.50max |
Cr | 11.5-13.5 | 16.0-18.0 | 17.00-19.00 |
Mo | … | … | … |
Al | … | … | 0.15 |
Cu | … | … | … |
N | … | … | 0.04 |
Ti | … | … | 0.20+4(C+N)Min, 1.10max |
Mechanical Properties
Grade | Tensile Strength, Min, Ksi [MPa] | Yield Strength, Min, Ksi [MPa] | ELONGATION. MIN, % |
TP410 | 55 [380] | 30 [205] | 20 |
TP430 | 60 [415] | 35 [240] | 20 |
TP439 | 60 [415] | 30 [205] | 20 |
Physical Properties
Density, g/cm3 (lb/in.3) | 7.8 (0.28) |
Melting point, °C (°F) | 1425-1510 (2600-2750) |
Specific heat capacity, J/kg · K (Btu/lb · °F) | 460 (0.11) at 0-100 °C (32 to 212 °F) |
Electrical resistivity, μΩ·m | 0.60 at 20 ℃ |
430 stainless steel magnetic permeability | 600-1100 (Approximate) |
Elastic modulus (Modulus of elasticity), GPa (106 psi) | 200 (29.0) |
Thermal diffusivity, mm2/s | 7.3 |
Thermal conductivity, W/m · K (Btu/ft · h · °F) | 26.1 (15.1), at 100 ℃ (212 °F) |
26.3 (15.2), at 500 ℃ (932 °F) | |
Coefficient of thermal expansion, μm/m · °C (μin./in. · °F) | 10.4 (5.8), at 0-100 ℃ (32-212 °F) |
11.0 (6.1), at 0-315 ℃ (32-600 °F) | |
11.4 (6.3), at 0-538 ℃ (32-1000 °F) |
SS430 Stainless Steel Heat Treatment
Heat Resistance
Maximum service temperatures, °C (°F) | ||
AISI | Intermittent service | Continuous service |
430 | 870 (1600) | 815 (1500) |