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EN 1.4959 Stainless Steel vs. EN 1.4911 Stainless Steel

Both EN 1.4959 stainless steel and EN 1.4911 stainless steel are iron alloys. They have 58% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4959 stainless steel and the bottom bar is EN 1.4911 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
11
Fatigue Strength, MPa 170
530
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 430
640
Tensile Strength: Ultimate (UTS), MPa 630
1070
Tensile Strength: Yield (Proof), MPa 190
970

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 510
430
Maximum Temperature: Mechanical, °C 1090
700
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
20
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 31
20
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.4
3.4
Embodied Energy, MJ/kg 76
49
Embodied Water, L/kg 200
130

Common Calculations

PREN (Pitting Resistance) 21
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
120
Resilience: Unit (Modulus of Resilience), kJ/m3 96
2410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
38
Strength to Weight: Bending, points 20
30
Thermal Diffusivity, mm2/s 3.2
5.4
Thermal Shock Resistance, points 15
37

Alloy Composition

Aluminum (Al), % 0.25 to 0.65
0
Boron (B), % 0
0.0050 to 0.015
Carbon (C), % 0.050 to 0.1
0.050 to 0.12
Chromium (Cr), % 19 to 22
9.8 to 11.2
Cobalt (Co), % 0 to 0.5
5.0 to 7.0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 39.4 to 50.5
75.7 to 83.8
Manganese (Mn), % 0 to 1.5
0.3 to 1.3
Molybdenum (Mo), % 0
0.5 to 1.0
Nickel (Ni), % 30 to 34
0.2 to 1.2
Niobium (Nb), % 0
0.2 to 0.5
Nitrogen (N), % 0 to 0.030
0 to 0.035
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0 to 0.7
0.1 to 0.8
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 0.25 to 0.65
0
Tungsten (W), % 0
0 to 0.7
Vanadium (V), % 0
0.1 to 0.4