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EN 1.4008 Stainless Steel vs. EN 1.0038 Steel

Both EN 1.4008 stainless steel and EN 1.0038 steel are iron alloys. They have 85% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4008 stainless steel and the bottom bar is EN 1.0038 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
23 to 25
Fatigue Strength, MPa 300
140 to 160
Impact Strength: V-Notched Charpy, J 31
28 to 31
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 670
380 to 430
Tensile Strength: Yield (Proof), MPa 500
200 to 220

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 760
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
49
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.1
1.4
Embodied Energy, MJ/kg 30
19
Embodied Water, L/kg 100
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
72 to 88
Resilience: Unit (Modulus of Resilience), kJ/m3 630
110 to 130
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
13 to 15
Strength to Weight: Bending, points 22
15 to 16
Thermal Diffusivity, mm2/s 6.7
13
Thermal Shock Resistance, points 23
12 to 13

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.23
Chromium (Cr), % 12 to 13.5
0 to 0.3
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 81.8 to 86.8
97.1 to 100
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0.2 to 0.5
0 to 0.080
Nickel (Ni), % 1.0 to 2.0
0 to 0.3
Nitrogen (N), % 0
0 to 0.014
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.55
Sulfur (S), % 0 to 0.025
0 to 0.045