321H grade stainless steel is the higher carbon version of grade 321. It possesses enhanced creep resistance and higher strength at temperatures above 10,00oF (537°C). Usually, the plate’s carbon content allows dual certification.
Specifications: UNS S32109, ASTM A240, ASME SA240, AMS 5510
Applications:
- Aerospace
- Chemical Processing
- Expansion Joints
- Food Processing
- Petroleum Refining
- Waste Treatment
- Pharmaceutical Production
321H Stainless Chemical Properties:
Grade |
C |
Mn |
Si |
P |
Cr |
Ni |
S |
N |
Ti |
Fe |
321H |
0.04 min-0.10 max |
2.00 max |
0.75 max |
0.045 max |
17.00-19.00 |
9.00-12.00 |
.030 max |
.010 max |
4x(carbon +nigrogen) min-0.70 max |
Balance |
321H Stainless Mechanical Properties:
Grade |
Tensile Strength ksi (min) |
Yield Strength 0.2% ksi (min) |
Elongation % |
321H |
75 |
30 |
40 |
321H Stainless Physical Properties:
Density
lb/in3 |
Thermal Conductivity
(BTU/hr/ft2/f/°F) |
Electrical
Resistivity
(microhm-in) |
Modulus of
Elasticity
(ksi x 10^6)
|
Coefficient of
Thermal Expansion
(in/in)/
°F x 10-6 |
Specific Heat
(BTU/lb/
°F) |
Melting
Range
(°F) |
.286 |
9.3 at 200°F |
72 at 20°F |
28 |
9.20 at 32 – 212°F |
0.1200 at 32°F to 212°F |
2550-2635 |
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