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SAE-AISI M34 Steel vs. EN 1.4421 Stainless Steel

Both SAE-AISI M34 steel and EN 1.4421 stainless steel are iron alloys. They have 79% 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 SAE-AISI M34 steel and the bottom bar is EN 1.4421 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 800 to 2170
880 to 1100

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1540
1440
Melting Onset (Solidus), °C 1500
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 24
16
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 32
12
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 9.5
2.6
Embodied Energy, MJ/kg 140
36
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 35
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 74
31 to 39
Strength to Weight: Bending, points 23 to 46
26 to 30
Thermal Diffusivity, mm2/s 6.7
4.4
Thermal Shock Resistance, points 25 to 67
31 to 39

Alloy Composition

Carbon (C), % 0.85 to 0.92
0 to 0.060
Chromium (Cr), % 3.5 to 4.0
15.5 to 17.5
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 71.3 to 76.5
74.4 to 80.5
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 7.8 to 9.2
0 to 0.7
Nickel (Ni), % 0 to 0.3
4.0 to 5.5
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.2 to 0.45
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.9 to 2.3
0

Comparable Variants