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EN 1.4935 Stainless Steel vs. EN 1.4590 Stainless Steel

Both EN 1.4935 stainless steel and EN 1.4590 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4935 stainless steel and the bottom bar is EN 1.4590 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 16 to 18
26
Fatigue Strength, MPa 350 to 400
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 480 to 540
310
Tensile Strength: Ultimate (UTS), MPa 780 to 880
480
Tensile Strength: Yield (Proof), MPa 570 to 670
270

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 380
470
Maximum Temperature: Mechanical, °C 740
860
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 24
26
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
11
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.9
2.5
Embodied Energy, MJ/kg 42
37
Embodied Water, L/kg 100
120

Common Calculations

PREN (Pitting Resistance) 16
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 830 to 1160
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 31
17
Strength to Weight: Bending, points 24 to 26
18
Thermal Diffusivity, mm2/s 6.5
7.0
Thermal Shock Resistance, points 27 to 30
17

Alloy Composition

Carbon (C), % 0.17 to 0.24
0 to 0.030
Chromium (Cr), % 11 to 12.5
16 to 17.5
Iron (Fe), % 83 to 86.7
79.7 to 83.7
Manganese (Mn), % 0.3 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.8 to 1.2
0
Nickel (Ni), % 0.3 to 0.8
0
Niobium (Nb), % 0
0.35 to 0.55
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.1 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 0.4 to 0.6
0
Vanadium (V), % 0.2 to 0.35
0
Zirconium (Zr), % 0
0 to 0.15