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SAE-AISI A7 Steel vs. EN 1.4849 Stainless Steel

Both SAE-AISI A7 steel and EN 1.4849 stainless steel are iron alloys. They have 45% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (8, 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 1.4849 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
75
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
480

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1470
1390
Melting Onset (Solidus), °C 1430
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 37
12
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 10
42
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 13
7.1
Embodied Energy, MJ/kg 200
100
Embodied Water, L/kg 100
200

Common Calculations

PREN (Pitting Resistance) 11
20
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29 to 77
17
Strength to Weight: Bending, points 25 to 48
17
Thermal Diffusivity, mm2/s 10
3.2
Thermal Shock Resistance, points 27 to 72
11

Alloy Composition

Carbon (C), % 2.0 to 2.9
0.3 to 0.5
Chromium (Cr), % 5.0 to 5.8
18 to 21
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 87.7
32.6 to 43.5
Manganese (Mn), % 0 to 0.8
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.4
0 to 0.5
Nickel (Ni), % 0 to 0.3
36 to 39
Niobium (Nb), % 0
1.2 to 1.8
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
1.0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0