MakeItFrom.com
Menu (ESC)

S31727 Stainless Steel vs. SAE-AISI A9 Steel

Both S31727 stainless steel and SAE-AISI A9 steel are iron alloys. They have 67% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is SAE-AISI A9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
74
Tensile Strength: Ultimate (UTS), MPa 630
770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 24
7.0
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.7
4.7
Embodied Energy, MJ/kg 64
70
Embodied Water, L/kg 180
82

Common Calculations

PREN (Pitting Resistance) 35
10
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
28 to 73
Strength to Weight: Bending, points 20
24 to 46
Thermal Shock Resistance, points 14
25 to 66

Alloy Composition

Carbon (C), % 0 to 0.030
0.45 to 0.55
Chromium (Cr), % 17.5 to 19
4.8 to 5.5
Copper (Cu), % 2.8 to 4.0
0 to 0.25
Iron (Fe), % 53.7 to 61.3
87 to 90.5
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 3.8 to 4.5
1.3 to 1.8
Nickel (Ni), % 14.5 to 16.5
1.3 to 1.8
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 1.0
1.0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.8 to 1.4