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S39274 Stainless Steel vs. EN 1.4640 Stainless Steel

Both S39274 stainless steel and EN 1.4640 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 33 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 S39274 stainless steel and the bottom bar is EN 1.4640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
190 to 200
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 17
51
Fatigue Strength, MPa 380
230 to 250
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 560
440 to 460
Tensile Strength: Ultimate (UTS), MPa 900
620 to 650
Tensile Strength: Yield (Proof), MPa 620
240 to 260

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
930
Melting Completion (Liquidus), °C 1480
1420
Melting Onset (Solidus), °C 1430
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 24
14
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.3
2.8
Embodied Energy, MJ/kg 60
40
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 43
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
250 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 940
150 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
22 to 23
Strength to Weight: Bending, points 26
21
Thermal Diffusivity, mm2/s 4.2
4.0
Thermal Shock Resistance, points 25
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.030
0.030 to 0.080
Chromium (Cr), % 24 to 26
18 to 19
Copper (Cu), % 0.2 to 0.8
1.3 to 2.0
Iron (Fe), % 57 to 65.6
67.4 to 73.6
Manganese (Mn), % 0 to 1.0
1.5 to 4.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 6.0 to 8.0
5.5 to 6.9
Nitrogen (N), % 0.24 to 0.32
0.030 to 0.11
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.015
Tungsten (W), % 1.5 to 2.5
0