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EN 1.4749 Stainless Steel vs. S39274 Stainless Steel

Both EN 1.4749 stainless steel and S39274 stainless steel are iron alloys. Both are furnished in the annealed condition. 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 EN 1.4749 stainless steel and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
270
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 16
17
Fatigue Strength, MPa 190
380
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 80
81
Shear Strength, MPa 370
560
Tensile Strength: Ultimate (UTS), MPa 600
900
Tensile Strength: Yield (Proof), MPa 320
620

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1420
1480
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
24
Density, g/cm3 7.6
8.0
Embodied Carbon, kg CO2/kg material 2.5
4.3
Embodied Energy, MJ/kg 36
60
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 31
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
140
Resilience: Unit (Modulus of Resilience), kJ/m3 250
940
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 22
32
Strength to Weight: Bending, points 21
26
Thermal Diffusivity, mm2/s 4.6
4.2
Thermal Shock Resistance, points 22
25

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.030
Chromium (Cr), % 26 to 29
24 to 26
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 68.5 to 73.7
57 to 65.6
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0.15 to 0.25
0.24 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5