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EN 1.4112 Stainless Steel vs. EN 1.4742 Stainless Steel

Both EN 1.4112 stainless steel and EN 1.4742 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4112 stainless steel and the bottom bar is EN 1.4742 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 20
17
Fatigue Strength, MPa 280
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 470
370
Tensile Strength: Ultimate (UTS), MPa 750
600
Tensile Strength: Yield (Proof), MPa 430
300

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 400
410
Maximum Temperature: Mechanical, °C 910
1000
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
19
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.0
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.6
2.2
Embodied Energy, MJ/kg 37
32
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 22
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
84
Resilience: Unit (Modulus of Resilience), kJ/m3 480
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
22
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 4.1
5.1
Thermal Shock Resistance, points 26
21

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.2
Carbon (C), % 0.85 to 1.0
0 to 0.12
Chromium (Cr), % 17 to 19
17 to 19
Iron (Fe), % 76.6 to 81.2
77.2 to 81.6
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0.7 to 1.4
Sulfur (S), % 0 to 0.015
0 to 0.015
Vanadium (V), % 0.070 to 0.12
0