MakeItFrom.com
Menu (ESC)

SAE-AISI A7 Steel vs. EN 1.4901 Stainless Steel

Both SAE-AISI A7 steel and EN 1.4901 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A7 steel and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
740

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1470
1490
Melting Onset (Solidus), °C 1430
1450
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 37
26
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 13
2.8
Embodied Energy, MJ/kg 200
40
Embodied Water, L/kg 100
89

Common Calculations

PREN (Pitting Resistance) 11
14
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29 to 77
26
Strength to Weight: Bending, points 25 to 48
23
Thermal Diffusivity, mm2/s 10
6.9
Thermal Shock Resistance, points 27 to 72
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 2.0 to 2.9
0.070 to 0.13
Chromium (Cr), % 5.0 to 5.8
8.5 to 9.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 87.7
85.8 to 89.1
Manganese (Mn), % 0 to 0.8
0.3 to 0.6
Molybdenum (Mo), % 0.9 to 1.4
0.3 to 0.6
Nickel (Ni), % 0 to 0.3
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0.5 to 1.5
1.5 to 2.0
Vanadium (V), % 3.9 to 5.2
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010