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EN 1.7703 Steel vs. EN 1.4436 Stainless Steel

Both EN 1.7703 steel and EN 1.4436 stainless steel are iron alloys. They have 70% 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 1.7703 steel and the bottom bar is EN 1.4436 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
42
Fatigue Strength, MPa 320 to 340
220
Impact Strength: V-Notched Charpy, J 46
90
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Shear Strength, MPa 420 to 430
430
Tensile Strength: Ultimate (UTS), MPa 670 to 690
620
Tensile Strength: Yield (Proof), MPa 460 to 500
240

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 460
960
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
19
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.5
3.9
Embodied Energy, MJ/kg 35
54
Embodied Water, L/kg 61
150

Common Calculations

PREN (Pitting Resistance) 5.6
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
210
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
22
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 19 to 20
14

Alloy Composition

Carbon (C), % 0.11 to 0.15
0 to 0.050
Chromium (Cr), % 2.0 to 2.5
16.5 to 18.5
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 94.6 to 96.4
62.3 to 70.5
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
2.5 to 3.0
Nickel (Ni), % 0 to 0.25
10.5 to 13
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0 to 0.1
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.0050
0 to 0.015
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0