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High Light: | stainless steel seamless pipes,seamless stainless steel tube |
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Stainless Steel 321 is a basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) addition. SS 321 is used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. SS 321 is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion. SS 321H is a modification of SS 321 with a higher carbon content, to provide improved high temperature strength.
Stainless Steel SS 321 / 321H | |
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AISI | 321 / 321H |
UNS | S32100 / S32109 |
Werkstoff Nr. | 1.4541 / 1.4878 |
Density | 8.0 g/cm3 |
Melting Point | 1454 °C (2650 °F) |
Tensile Strength | Psi – 75000 , MPa – 515 |
Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
Elongation | 35 % |
SS 321 | SS 321H | |
Ni | 9 – 12 | 9 – 12 |
Cr | 17 – 19 | 17 – 19 |
C | 0.08 max | 0.04 – 0.10 |
N | 0.10 max | |
Fe | Balance | |
Mn | 2 max | 2 max |
Si | 0.75 max | 0.75 max |
S | 0.03 max | 0.03 max |
P | 0.045 max | 0.045 max |
Ti |
5xC min 0.60% max |
4xC min 0.60% max |
ANSI B16.10: B16.19 SCH 5S, SCH 10S, SCH 20, SCH 30, SCH 40S, SCH 60, SCH80S, XS, SCH 100, SCH 120, SCH160, XXS
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