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S21904 Stainless Steel vs. EN 1.4057 Stainless Steel

Both S21904 stainless steel and EN 1.4057 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is EN 1.4057 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17 to 51
11 to 17
Fatigue Strength, MPa 380 to 550
320 to 430
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 510 to 620
520 to 580
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
840 to 980
Tensile Strength: Yield (Proof), MPa 390 to 910
530 to 790

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 430
400
Maximum Temperature: Mechanical, °C 980
850
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
25
Thermal Expansion, µm/m-K 17
10

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.0
2.2
Embodied Energy, MJ/kg 43
32
Embodied Water, L/kg 160
120

Common Calculations

PREN (Pitting Resistance) 25
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
96 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
700 to 1610
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 36
30 to 35
Strength to Weight: Bending, points 23 to 29
26 to 28
Thermal Diffusivity, mm2/s 3.8
6.7
Thermal Shock Resistance, points 15 to 21
30 to 35

Alloy Composition

Carbon (C), % 0 to 0.040
0.12 to 0.22
Chromium (Cr), % 19 to 21.5
15 to 17
Iron (Fe), % 59.5 to 67.4
77.7 to 83.4
Manganese (Mn), % 8.0 to 10
0 to 1.5
Nickel (Ni), % 5.5 to 7.5
1.5 to 2.5
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015

Comparable Variants