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EN 1.4742 Stainless Steel vs. EN 1.4912 Stainless Steel

Both EN 1.4742 stainless steel and EN 1.4912 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 33 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 1.4742 stainless steel and the bottom bar is EN 1.4912 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
40
Fatigue Strength, MPa 180
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 370
420
Tensile Strength: Ultimate (UTS), MPa 600
610
Tensile Strength: Yield (Proof), MPa 300
230

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
520
Maximum Temperature: Mechanical, °C 1000
940
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 19
16
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
20
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.2
3.8
Embodied Energy, MJ/kg 32
55
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 18
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
190
Resilience: Unit (Modulus of Resilience), kJ/m3 230
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
22
Strength to Weight: Bending, points 21
20
Thermal Diffusivity, mm2/s 5.1
4.2
Thermal Shock Resistance, points 21
14

Alloy Composition

Aluminum (Al), % 0.7 to 1.2
0
Carbon (C), % 0 to 0.12
0.040 to 0.1
Chromium (Cr), % 17 to 19
17 to 19
Iron (Fe), % 77.2 to 81.6
64.6 to 73.6
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 0
9.0 to 12
Niobium (Nb), % 0
0.4 to 1.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0.7 to 1.4
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015