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S44725 Stainless Steel vs. EN 1.8509 Steel

Both S44725 stainless steel and EN 1.8509 steel are iron alloys. They have 73% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S44725 stainless steel and the bottom bar is EN 1.8509 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
340
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 22
11
Fatigue Strength, MPa 210
580
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 320
680
Tensile Strength: Ultimate (UTS), MPa 500
1130
Tensile Strength: Yield (Proof), MPa 310
940

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1100
440
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
39
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.1
1.6
Embodied Energy, MJ/kg 44
22
Embodied Water, L/kg 170
65

Common Calculations

PREN (Pitting Resistance) 33
2.6
Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
120
Resilience: Unit (Modulus of Resilience), kJ/m3 240
2340
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
40
Strength to Weight: Bending, points 18
31
Thermal Diffusivity, mm2/s 4.6
10
Thermal Shock Resistance, points 16
33

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0 to 0.015
0.38 to 0.45
Chromium (Cr), % 25 to 28.5
1.5 to 1.8
Iron (Fe), % 67.6 to 73.5
95.5 to 97.1
Manganese (Mn), % 0 to 0.4
0.4 to 0.7
Molybdenum (Mo), % 1.5 to 2.5
0.2 to 0.35
Nickel (Ni), % 0 to 0.3
0
Niobium (Nb), % 0 to 0.26
0
Nitrogen (N), % 0 to 0.018
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.040
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.035
Titanium (Ti), % 0 to 0.26
0