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AISI 321H Stainless Steel vs. S64512 Stainless Steel

Both AISI 321H stainless steel and S64512 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 321H stainless steel and the bottom bar is S64512 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
330
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
17
Fatigue Strength, MPa 200
540
Poisson's Ratio 0.28
0.28
Reduction in Area, % 51
34
Shear Modulus, GPa 77
76
Shear Strength, MPa 400
700
Tensile Strength: Ultimate (UTS), MPa 580
1140
Tensile Strength: Yield (Proof), MPa 230
890

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 480
390
Maximum Temperature: Mechanical, °C 940
750
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
28
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 16
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
3.3
Embodied Energy, MJ/kg 46
47
Embodied Water, L/kg 140
110

Common Calculations

PREN (Pitting Resistance) 18
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
180
Resilience: Unit (Modulus of Resilience), kJ/m3 140
2020
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
40
Strength to Weight: Bending, points 20
31
Thermal Diffusivity, mm2/s 4.0
7.5
Thermal Shock Resistance, points 12
42

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.080 to 0.15
Chromium (Cr), % 17 to 19
11 to 12.5
Iron (Fe), % 65.4 to 74
80.6 to 84.7
Manganese (Mn), % 0 to 2.0
0.5 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 9.0 to 12
2.0 to 3.0
Nitrogen (N), % 0
0.010 to 0.050
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.75
0 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 0 to 0.7
0
Vanadium (V), % 0
0.25 to 0.4