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AISI 321H Stainless Steel vs. AISI 310Cb Stainless Steel

Both AISI 321H stainless steel and AISI 310Cb stainless steel are iron alloys. Both are furnished in the annealed condition. They have 82% of their average alloy composition in common.

For each property being compared, the top bar is AISI 321H stainless steel and the bottom bar is AISI 310Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
39
Fatigue Strength, MPa 200
200
Poisson's Ratio 0.28
0.28
Reduction in Area, % 51
46
Rockwell B Hardness 82
84
Shear Modulus, GPa 77
78
Shear Strength, MPa 400
390
Tensile Strength: Ultimate (UTS), MPa 580
580
Tensile Strength: Yield (Proof), MPa 230
230

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 480
520
Maximum Temperature: Mechanical, °C 940
1100
Melting Completion (Liquidus), °C 1430
1410
Melting Onset (Solidus), °C 1380
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 16
28
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.2
4.8
Embodied Energy, MJ/kg 46
69
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 18
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
180
Resilience: Unit (Modulus of Resilience), kJ/m3 140
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
20
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 4.0
3.9
Thermal Shock Resistance, points 12
13

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.080
Chromium (Cr), % 17 to 19
24 to 26
Iron (Fe), % 65.4 to 74
47.2 to 57
Manganese (Mn), % 0 to 2.0
0 to 2.0
Nickel (Ni), % 9.0 to 12
19 to 22
Niobium (Nb), % 0
0 to 1.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0 to 0.7
0