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EN 1.7710 Steel vs. S21904 Stainless Steel

Both EN 1.7710 steel and S21904 stainless steel are iron alloys. They have 66% 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 EN 1.7710 steel and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 320
210 to 300
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 6.8 to 11
17 to 51
Fatigue Strength, MPa 500 to 620
380 to 550
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 930 to 1070
700 to 1000
Tensile Strength: Yield (Proof), MPa 800 to 1060
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 440
980
Melting Completion (Liquidus), °C 1470
1400
Melting Onset (Solidus), °C 1430
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 41
14
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.2
3.0
Embodied Energy, MJ/kg 30
43
Embodied Water, L/kg 57
160

Common Calculations

PREN (Pitting Resistance) 4.5
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 73 to 100
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 1680 to 2970
380 to 2070
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33 to 38
25 to 36
Strength to Weight: Bending, points 27 to 30
23 to 29
Thermal Diffusivity, mm2/s 11
3.8
Thermal Shock Resistance, points 27 to 31
15 to 21

Alloy Composition

Carbon (C), % 0.12 to 0.18
0 to 0.040
Chromium (Cr), % 1.3 to 1.8
19 to 21.5
Iron (Fe), % 95.1 to 97
59.5 to 67.4
Manganese (Mn), % 0.6 to 1.0
8.0 to 10
Molybdenum (Mo), % 0.8 to 1.0
0
Nickel (Ni), % 0
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.15 to 0.25
0

Comparable Variants