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EN 1.4911 Stainless Steel vs. EN 1.4903 Stainless Steel

Both EN 1.4911 stainless steel and EN 1.4903 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4911 stainless steel and the bottom bar is EN 1.4903 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
20 to 21
Fatigue Strength, MPa 530
320 to 330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Shear Strength, MPa 640
420
Tensile Strength: Ultimate (UTS), MPa 1070
670 to 680
Tensile Strength: Yield (Proof), MPa 970
500

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Corrosion, °C 430
380
Maximum Temperature: Mechanical, °C 700
650
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 20
26
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
4.0

Otherwise Unclassified Properties

Base Metal Price, % relative 20
7.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
2.6
Embodied Energy, MJ/kg 49
36
Embodied Water, L/kg 130
88

Common Calculations

PREN (Pitting Resistance) 14
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
650
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
24
Strength to Weight: Bending, points 30
22
Thermal Diffusivity, mm2/s 5.4
7.0
Thermal Shock Resistance, points 37
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0.080 to 0.12
Chromium (Cr), % 9.8 to 11.2
8.0 to 9.5
Cobalt (Co), % 5.0 to 7.0
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 75.7 to 83.8
87.1 to 90.5
Manganese (Mn), % 0.3 to 1.3
0.3 to 0.6
Molybdenum (Mo), % 0.5 to 1.0
0.85 to 1.1
Nickel (Ni), % 0.2 to 1.2
0 to 0.4
Niobium (Nb), % 0.2 to 0.5
0.060 to 0.1
Nitrogen (N), % 0 to 0.035
0.030 to 0.070
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0.1 to 0.8
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0.18 to 0.25