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EN 1.4035 Stainless Steel vs. EN 1.4742 Stainless Steel

Both EN 1.4035 stainless steel and EN 1.4742 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4035 stainless steel and the bottom bar is EN 1.4742 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 18
17
Fatigue Strength, MPa 250
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 430
370
Tensile Strength: Ultimate (UTS), MPa 690
600
Tensile Strength: Yield (Proof), MPa 400
300

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 380
410
Maximum Temperature: Mechanical, °C 760
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 29
19
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.0
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.0
2.2
Embodied Energy, MJ/kg 27
32
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 13
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
84
Resilience: Unit (Modulus of Resilience), kJ/m3 420
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
22
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 7.8
5.1
Thermal Shock Resistance, points 25
21

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.2
Carbon (C), % 0.43 to 0.5
0 to 0.12
Chromium (Cr), % 12.5 to 14
17 to 19
Iron (Fe), % 82.1 to 86.9
77.2 to 81.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0.7 to 1.4
Sulfur (S), % 0.15 to 0.35
0 to 0.015