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EN 1.4958 Stainless Steel vs. EN 1.4594 Stainless Steel

Both EN 1.4958 stainless steel and EN 1.4594 stainless steel are iron alloys. They have 67% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4958 stainless steel and the bottom bar is EN 1.4594 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
11 to 17
Fatigue Strength, MPa 170
490 to 620
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 430
620 to 700
Tensile Strength: Ultimate (UTS), MPa 630
1020 to 1170
Tensile Strength: Yield (Proof), MPa 190
810 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 500
450
Maximum Temperature: Mechanical, °C 1090
820
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
16
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 30
15
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.3
3.2
Embodied Energy, MJ/kg 75
45
Embodied Water, L/kg 200
130

Common Calculations

PREN (Pitting Resistance) 21
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 95
1660 to 3320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
36 to 41
Strength to Weight: Bending, points 20
29 to 31
Thermal Diffusivity, mm2/s 3.2
4.4
Thermal Shock Resistance, points 15
34 to 39

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
0
Carbon (C), % 0.030 to 0.080
0 to 0.070
Chromium (Cr), % 19 to 22
13 to 15
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
1.2 to 2.0
Iron (Fe), % 41.1 to 50.6
72.6 to 79.5
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0
1.2 to 2.0
Nickel (Ni), % 30 to 32.5
5.0 to 6.0
Niobium (Nb), % 0 to 0.1
0.15 to 0.6
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 0.7
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 0.2 to 0.5
0