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EN 1.4911 Stainless Steel vs. EN 1.4742 Stainless Steel

Both EN 1.4911 stainless steel and EN 1.4742 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 1.4742 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
17
Fatigue Strength, MPa 530
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 640
370
Tensile Strength: Ultimate (UTS), MPa 1070
600
Tensile Strength: Yield (Proof), MPa 970
300

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 700
1000
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 20
19
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 20
9.0
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 3.4
2.2
Embodied Energy, MJ/kg 49
32
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 14
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
84
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
22
Strength to Weight: Bending, points 30
21
Thermal Diffusivity, mm2/s 5.4
5.1
Thermal Shock Resistance, points 37
21

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.2
Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0 to 0.12
Chromium (Cr), % 9.8 to 11.2
17 to 19
Cobalt (Co), % 5.0 to 7.0
0
Iron (Fe), % 75.7 to 83.8
77.2 to 81.6
Manganese (Mn), % 0.3 to 1.3
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 0.2 to 1.2
0
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.1 to 0.8
0.7 to 1.4
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