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SAE-AISI 1552 Steel vs. AISI 321H Stainless Steel

Both SAE-AISI 1552 steel and AISI 321H stainless steel are iron alloys. They have 71% 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 SAE-AISI 1552 steel and the bottom bar is AISI 321H stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 250
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 14
40
Fatigue Strength, MPa 290 to 400
200
Poisson's Ratio 0.29
0.28
Reduction in Area, % 34 to 46
51
Shear Modulus, GPa 72
77
Shear Strength, MPa 460 to 510
400
Tensile Strength: Ultimate (UTS), MPa 760 to 840
580
Tensile Strength: Yield (Proof), MPa 460 to 650
230

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
940
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
15
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.2
Embodied Energy, MJ/kg 19
46
Embodied Water, L/kg 47
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81 to 98
190
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1130
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 30
21
Strength to Weight: Bending, points 24 to 25
20
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 26 to 29
12

Alloy Composition

Carbon (C), % 0.47 to 0.55
0.040 to 0.1
Chromium (Cr), % 0
17 to 19
Iron (Fe), % 97.9 to 98.3
65.4 to 74
Manganese (Mn), % 1.2 to 1.5
0 to 2.0
Nickel (Ni), % 0
9.0 to 12
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0 to 0.050
0 to 0.030
Titanium (Ti), % 0
0 to 0.7