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EN 1.7390 Steel vs. AISI 441 Stainless Steel

Both EN 1.7390 steel and AISI 441 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.7390 steel and the bottom bar is AISI 441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
23
Fatigue Strength, MPa 310
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 440
300
Tensile Strength: Ultimate (UTS), MPa 710
470
Tensile Strength: Yield (Proof), MPa 480
270

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 510
910
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
23
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
2.8
Embodied Energy, MJ/kg 23
41
Embodied Water, L/kg 69
130

Common Calculations

PREN (Pitting Resistance) 6.8
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
92
Resilience: Unit (Modulus of Resilience), kJ/m3 600
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 11
6.1
Thermal Shock Resistance, points 20
16

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.030
Chromium (Cr), % 4.0 to 6.0
17.5 to 19.5
Iron (Fe), % 91.9 to 95.3
76 to 82.2
Manganese (Mn), % 0.3 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.45 to 0.65
0
Nickel (Ni), % 0
0 to 1.0
Niobium (Nb), % 0
0.3 to 0.9
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0.1 to 0.5