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EN 1.4658 Stainless Steel vs. SAE-AISI M34 Steel

Both EN 1.4658 stainless steel and SAE-AISI M34 steel are iron alloys. They have 68% of their average alloy composition in common. There are 22 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 1.4658 stainless steel and the bottom bar is SAE-AISI M34 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
77
Tensile Strength: Ultimate (UTS), MPa 900
800 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1450
1540
Melting Onset (Solidus), °C 1400
1500
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 16
24
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
32
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 4.5
9.5
Embodied Energy, MJ/kg 61
140
Embodied Water, L/kg 200
150

Common Calculations

PREN (Pitting Resistance) 49
35
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32
27 to 74
Strength to Weight: Bending, points 26
23 to 46
Thermal Diffusivity, mm2/s 4.3
6.7
Thermal Shock Resistance, points 24
25 to 67

Alloy Composition

Carbon (C), % 0 to 0.030
0.85 to 0.92
Chromium (Cr), % 26 to 29
3.5 to 4.0
Cobalt (Co), % 0.5 to 2.0
7.8 to 8.8
Copper (Cu), % 0 to 1.0
0 to 0.25
Iron (Fe), % 50.9 to 63.7
71.3 to 76.5
Manganese (Mn), % 0 to 1.5
0.15 to 0.4
Molybdenum (Mo), % 4.0 to 5.0
7.8 to 9.2
Nickel (Ni), % 5.5 to 9.5
0 to 0.3
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 0.5
0.2 to 0.45
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0
1.4 to 2.1
Vanadium (V), % 0
1.9 to 2.3