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S44700 Stainless Steel vs. SAE-AISI 94B30 Steel

Both S44700 stainless steel and SAE-AISI 94B30 steel are iron alloys. Both are furnished in the annealed condition. They have 68% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S44700 stainless steel and the bottom bar is SAE-AISI 94B30 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
150
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 23
25
Fatigue Strength, MPa 300
220
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 82
73
Shear Strength, MPa 380
320
Tensile Strength: Ultimate (UTS), MPa 600
500
Tensile Strength: Yield (Proof), MPa 450
300

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 18
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
1.5
Embodied Energy, MJ/kg 49
20
Embodied Water, L/kg 180
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 480
250
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
18
Strength to Weight: Bending, points 20
18
Thermal Shock Resistance, points 19
15

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0 to 0.010
0.28 to 0.33
Chromium (Cr), % 28 to 30
0.3 to 0.5
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 64.9 to 68.5
97 to 98.1
Manganese (Mn), % 0 to 0.3
0.75 to 1.0
Molybdenum (Mo), % 3.5 to 4.2
0.080 to 0.15
Nickel (Ni), % 0 to 0.15
0.3 to 0.6
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.2
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.040