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EN 1.5521 Steel vs. AISI 309H Stainless Steel

Both EN 1.5521 steel and AISI 309H stainless steel are iron alloys. They have 63% 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 EN 1.5521 steel and the bottom bar is AISI 309H stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 180
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 21
40
Fatigue Strength, MPa 210 to 310
200
Poisson's Ratio 0.29
0.27
Reduction in Area, % 59 to 72
51
Shear Modulus, GPa 73
78
Shear Strength, MPa 310 to 360
400
Tensile Strength: Ultimate (UTS), MPa 430 to 1390
580
Tensile Strength: Yield (Proof), MPa 300 to 490
230

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
1080
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.6
Embodied Energy, MJ/kg 19
51
Embodied Water, L/kg 47
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44 to 230
190
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 630
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 15 to 49
21
Strength to Weight: Bending, points 16 to 35
20
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 13 to 41
13

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.16 to 0.2
0.040 to 0.1
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 98 to 98.9
58.1 to 66
Manganese (Mn), % 0.9 to 1.2
0 to 2.0
Nickel (Ni), % 0
12 to 15
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.3
0 to 0.75
Sulfur (S), % 0 to 0.025
0 to 0.030