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EN 1.4911 Stainless Steel vs. EN 1.4594 Stainless Steel

Both EN 1.4911 stainless steel and EN 1.4594 stainless steel are iron alloys. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4911 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, % 11
11 to 17
Fatigue Strength, MPa 530
490 to 620
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Shear Strength, MPa 640
620 to 700
Tensile Strength: Ultimate (UTS), MPa 1070
1020 to 1170
Tensile Strength: Yield (Proof), MPa 970
810 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 430
450
Maximum Temperature: Mechanical, °C 700
820
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 20
16
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 20
15
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.4
3.2
Embodied Energy, MJ/kg 49
45
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 14
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
1660 to 3320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
36 to 41
Strength to Weight: Bending, points 30
29 to 31
Thermal Diffusivity, mm2/s 5.4
4.4
Thermal Shock Resistance, points 37
34 to 39

Alloy Composition

Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0 to 0.070
Chromium (Cr), % 9.8 to 11.2
13 to 15
Cobalt (Co), % 5.0 to 7.0
0
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 75.7 to 83.8
72.6 to 79.5
Manganese (Mn), % 0.3 to 1.3
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
1.2 to 2.0
Nickel (Ni), % 0.2 to 1.2
5.0 to 6.0
Niobium (Nb), % 0.2 to 0.5
0.15 to 0.6
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.1 to 0.8
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0