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EN 1.7390 Steel vs. S44627 Stainless Steel

Both EN 1.7390 steel and S44627 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 33 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 1.7390 steel and the bottom bar is S44627 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
24
Fatigue Strength, MPa 310
200
Poisson's Ratio 0.29
0.27
Reduction in Area, % 50
51
Shear Modulus, GPa 74
80
Shear Strength, MPa 440
310
Tensile Strength: Ultimate (UTS), MPa 710
490
Tensile Strength: Yield (Proof), MPa 480
300

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 510
1100
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
2.9
Embodied Energy, MJ/kg 23
41
Embodied Water, L/kg 69
160

Common Calculations

PREN (Pitting Resistance) 6.8
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
100
Resilience: Unit (Modulus of Resilience), kJ/m3 600
220
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
18
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 11
4.6
Thermal Shock Resistance, points 20
16

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.010
Chromium (Cr), % 4.0 to 6.0
25 to 27.5
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 91.9 to 95.3
69.2 to 74.2
Manganese (Mn), % 0.3 to 0.8
0 to 0.4
Molybdenum (Mo), % 0.45 to 0.65
0.75 to 1.5
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.050 to 0.2
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.020