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EN 1.4958 Stainless Steel vs. EN 1.4662 Stainless Steel

Both EN 1.4958 stainless steel and EN 1.4662 stainless steel are iron alloys. They have 71% 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 1.4662 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
28
Fatigue Strength, MPa 170
430 to 450
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 430
520 to 540
Tensile Strength: Ultimate (UTS), MPa 630
810 to 830
Tensile Strength: Yield (Proof), MPa 190
580 to 620

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 500
440
Maximum Temperature: Mechanical, °C 1090
1090
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 15
13

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
16
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.3
3.2
Embodied Energy, MJ/kg 75
45
Embodied Water, L/kg 200
170

Common Calculations

PREN (Pitting Resistance) 21
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
210
Resilience: Unit (Modulus of Resilience), kJ/m3 95
840 to 940
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
29 to 30
Strength to Weight: Bending, points 20
25
Thermal Diffusivity, mm2/s 3.2
3.9
Thermal Shock Resistance, points 15
22

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
23 to 25
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0.1 to 0.8
Iron (Fe), % 41.1 to 50.6
62.6 to 70.2
Manganese (Mn), % 0 to 1.5
2.5 to 4.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 30 to 32.5
3.0 to 4.5
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0.2 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.035
Silicon (Si), % 0 to 0.7
0 to 0.7
Sulfur (S), % 0 to 0.010
0 to 0.0050
Titanium (Ti), % 0.2 to 0.5
0