MakeItFrom.com
Menu (ESC)

S21904 Stainless Steel vs. EN 1.4931 Steel

Both S21904 stainless steel and EN 1.4931 steel are iron alloys. They have 77% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
240
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17 to 51
17
Fatigue Strength, MPa 380 to 550
410
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
810
Tensile Strength: Yield (Proof), MPa 390 to 910
620

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Mechanical, °C 980
600
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
24
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
9.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
8.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.0
2.9
Embodied Energy, MJ/kg 43
42
Embodied Water, L/kg 160
100

Common Calculations

PREN (Pitting Resistance) 25
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
130
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
970
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 36
29
Strength to Weight: Bending, points 23 to 29
25
Thermal Diffusivity, mm2/s 3.8
6.5
Thermal Shock Resistance, points 15 to 21
22

Alloy Composition

Carbon (C), % 0 to 0.040
0.2 to 0.26
Chromium (Cr), % 19 to 21.5
11.3 to 12.2
Iron (Fe), % 59.5 to 67.4
83.2 to 86.8
Manganese (Mn), % 8.0 to 10
0.5 to 0.8
Molybdenum (Mo), % 0
1.0 to 1.2
Nickel (Ni), % 5.5 to 7.5
0 to 1.0
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0.25 to 0.35