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EN 1.4958 Stainless Steel vs. EN 1.4378 Stainless Steel

Both EN 1.4958 stainless steel and EN 1.4378 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4958 stainless steel and the bottom bar is EN 1.4378 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
14 to 34
Fatigue Strength, MPa 170
340 to 550
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 430
510 to 680
Tensile Strength: Ultimate (UTS), MPa 630
760 to 1130
Tensile Strength: Yield (Proof), MPa 190
430 to 970

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 500
410
Maximum Temperature: Mechanical, °C 1090
910
Melting Completion (Liquidus), °C 1400
1390
Melting Onset (Solidus), °C 1350
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 15
17

Otherwise Unclassified Properties

Base Metal Price, % relative 30
12
Density, g/cm3 8.0
7.6
Embodied Carbon, kg CO2/kg material 5.3
2.7
Embodied Energy, MJ/kg 75
39
Embodied Water, L/kg 200
150

Common Calculations

PREN (Pitting Resistance) 21
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
150 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 95
470 to 2370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
28 to 41
Strength to Weight: Bending, points 20
24 to 31
Thermal Shock Resistance, points 15
16 to 23

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
0
Carbon (C), % 0.030 to 0.080
0 to 0.080
Chromium (Cr), % 19 to 22
17 to 19
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 41.1 to 50.6
61.2 to 69
Manganese (Mn), % 0 to 1.5
11.5 to 14.5
Nickel (Ni), % 30 to 32.5
2.3 to 3.7
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0.2 to 0.4
Phosphorus (P), % 0 to 0.015
0 to 0.060
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0.2 to 0.5
0