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AISI 310H Stainless Steel vs. ASTM A369 Grade FP21

Both AISI 310H stainless steel and ASTM A369 grade FP21 are iron alloys. Both are furnished in the annealed condition. They have 57% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 310H stainless steel and the bottom bar is ASTM A369 grade FP21.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
20
Fatigue Strength, MPa 200
160
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
74
Shear Strength, MPa 400
300
Tensile Strength: Ultimate (UTS), MPa 580
470
Tensile Strength: Yield (Proof), MPa 230
240

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Maximum Temperature: Mechanical, °C 1100
470
Melting Completion (Liquidus), °C 1410
1470
Melting Onset (Solidus), °C 1360
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
41
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 25
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.3
1.8
Embodied Energy, MJ/kg 61
23
Embodied Water, L/kg 190
61

Common Calculations

PREN (Pitting Resistance) 25
6.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
80
Resilience: Unit (Modulus of Resilience), kJ/m3 130
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
17
Strength to Weight: Bending, points 20
17
Thermal Diffusivity, mm2/s 3.9
11
Thermal Shock Resistance, points 13
14

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.050 to 0.15
Chromium (Cr), % 24 to 26
2.7 to 3.4
Iron (Fe), % 49.1 to 57
94.3 to 96.2
Manganese (Mn), % 0 to 2.0
0.3 to 0.6
Molybdenum (Mo), % 0
0.8 to 1.1
Nickel (Ni), % 19 to 22
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.75
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025