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EN 1.4958 Stainless Steel vs. EN 1.4435 Stainless Steel

Both EN 1.4958 stainless steel and EN 1.4435 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 79% of their average alloy composition in common. There are 32 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 1.4958 stainless steel and the bottom bar is EN 1.4435 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
43
Fatigue Strength, MPa 170
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 430
420
Tensile Strength: Ultimate (UTS), MPa 630
610
Tensile Strength: Yield (Proof), MPa 190
240

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 500
420
Maximum Temperature: Mechanical, °C 1090
980
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 15
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 30
21
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.3
4.1
Embodied Energy, MJ/kg 75
57
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 21
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
210
Resilience: Unit (Modulus of Resilience), kJ/m3 95
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
21
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 3.2
4.0
Thermal Shock Resistance, points 15
14

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
0
Carbon (C), % 0.030 to 0.080
0 to 0.030
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
59.8 to 68
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 30 to 32.5
12.5 to 15
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0 to 0.1
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 0.2 to 0.5
0