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S21904 Stainless Steel vs. EN 1.4035 Stainless Steel

Both S21904 stainless steel and EN 1.4035 stainless steel are iron alloys. They have 78% of their average alloy composition in common.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is EN 1.4035 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
220
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17 to 51
18
Fatigue Strength, MPa 380 to 550
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Shear Strength, MPa 510 to 620
430
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
690
Tensile Strength: Yield (Proof), MPa 390 to 910
400

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 430
380
Maximum Temperature: Mechanical, °C 980
760
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
29
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
7.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.0
2.0
Embodied Energy, MJ/kg 43
27
Embodied Water, L/kg 160
100

Common Calculations

PREN (Pitting Resistance) 25
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
110
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
420
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 36
25
Strength to Weight: Bending, points 23 to 29
22
Thermal Diffusivity, mm2/s 3.8
7.8
Thermal Shock Resistance, points 15 to 21
25

Alloy Composition

Carbon (C), % 0 to 0.040
0.43 to 0.5
Chromium (Cr), % 19 to 21.5
12.5 to 14
Iron (Fe), % 59.5 to 67.4
82.1 to 86.9
Manganese (Mn), % 8.0 to 10
0 to 2.0
Nickel (Ni), % 5.5 to 7.5
0
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
0.15 to 0.35