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EN 1.4029 Stainless Steel vs. SAE-AISI 1070 Steel

Both EN 1.4029 stainless steel and SAE-AISI 1070 steel are iron alloys. They have 86% 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 1.4029 stainless steel and the bottom bar is SAE-AISI 1070 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 10 to 20
10 to 13
Fatigue Strength, MPa 270 to 400
270 to 350
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
72
Shear Strength, MPa 440 to 550
380 to 460
Tensile Strength: Ultimate (UTS), MPa 700 to 930
640 to 760
Tensile Strength: Yield (Proof), MPa 410 to 740
420 to 560

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 750
400
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 30
50
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
10
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
12

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
19
Embodied Water, L/kg 100
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 120
59 to 86
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 1410
470 to 850
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 33
23 to 27
Strength to Weight: Bending, points 23 to 27
21 to 24
Thermal Diffusivity, mm2/s 8.1
14
Thermal Shock Resistance, points 26 to 34
21 to 25

Alloy Composition

Carbon (C), % 0.25 to 0.32
0.65 to 0.75
Chromium (Cr), % 12 to 13.5
0
Iron (Fe), % 82.8 to 87.6
98.3 to 98.8
Manganese (Mn), % 0 to 1.5
0.6 to 0.9
Molybdenum (Mo), % 0 to 0.6
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0.15 to 0.25
0 to 0.050