ASME SA268 TP430 S43000 Ferritic Stainless Steel Seamless Tube for Oil and Gas Industry
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ASME SA268 is a standard specification for seamless and welded tubes and pipes of ferritic and martensitic stainless steels for general purposes, in grades TP410, TP405, TP420, TP430, TP430Ti, TP403, TP409, TP444, TP439, and TP446 etc..
ASME SA268 TP430 Stainless Steel Seamless Tube 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 |
ASME SA268 TP430 Stainless Steel Seamless Tube 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 |
ASME SA268 TP430 Stainless Steel Seamless Tube 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) |
ASME SA268 TP430 Stainless Steel Seamless Tube Heat Treatment
- Annealing: Recommended annealing treatment for 430 steel is 650 °C (1200°F).
- Forging: Typical forging temperature for SS430 is 815-1120 °C (1500-2050 °F).
ASME SA268 TP430 Stainless Steel Seamless Tube Heat Resistance
| Maximum service temperatures, °C (°F) |
| AISI | Intermittent service | Continuous service |
| 430 | 870 (1600) | 815 (1500) |
ASME SA268 TP430 (S43000) Tubing in Oil & Gas Applications, Common Application Areas & Equipment:
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Utility & Service Water Systems
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Low-Pressure Instrumentation & Sensing Lines
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Hydraulic Control Lines (Limited)
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Vent & Drain Lines
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Heat Exchanger Tubes (Limited & Specific)
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Fuel Gas Piping (Conditional)
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ASME SA268 TP430 S43000 Ferritic Stainless Steel Seamless Tube for Oil and Gas Industry Images
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