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EN 1.4729 Stainless Steel vs. SAE-AISI M30 Steel

Both EN 1.4729 stainless steel and SAE-AISI M30 steel are iron alloys. They have 83% of their average alloy composition in common. There are 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.4729 stainless steel and the bottom bar is SAE-AISI M30 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
78

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1420
1550
Melting Onset (Solidus), °C 1380
1500
Specific Heat Capacity, J/kg-K 490
450
Thermal Conductivity, W/m-K 24
24
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
26
Density, g/cm3 7.6
8.2
Embodied Carbon, kg CO2/kg material 2.1
7.2
Embodied Energy, MJ/kg 29
100
Embodied Water, L/kg 100
120

Common Calculations

PREN (Pitting Resistance) 14
35
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Thermal Diffusivity, mm2/s 6.5
6.6

Alloy Composition

Carbon (C), % 0.3 to 0.5
0.75 to 0.85
Chromium (Cr), % 12 to 14
3.5 to 4.3
Cobalt (Co), % 0
4.5 to 5.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 80.4 to 86.7
75.2 to 80.9
Manganese (Mn), % 0 to 1.0
0.15 to 0.4
Molybdenum (Mo), % 0 to 0.5
7.8 to 9.0
Nickel (Ni), % 0 to 1.0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 1.0 to 2.5
0.2 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
1.3 to 2.3
Vanadium (V), % 0
1.0 to 1.4