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AISI 309H Stainless Steel vs. AWS BNi-4

AISI 309H stainless steel belongs to the iron alloys classification, while AWS BNi-4 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is AISI 309H stainless steel and the bottom bar is AWS BNi-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Poisson's Ratio 0.27
0.31
Shear Modulus, GPa 78
67
Tensile Strength: Ultimate (UTS), MPa 580
430

Thermal Properties

Latent Heat of Fusion, J/g 290
340
Melting Completion (Liquidus), °C 1420
1070
Melting Onset (Solidus), °C 1370
980
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 19
60
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 3.6
10
Embodied Energy, MJ/kg 51
140
Embodied Water, L/kg 170
220

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 21
14
Strength to Weight: Bending, points 20
15
Thermal Shock Resistance, points 13
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
1.5 to 2.2
Carbon (C), % 0.040 to 0.1
0 to 0.060
Chromium (Cr), % 22 to 24
0
Cobalt (Co), % 0
0 to 0.1
Iron (Fe), % 58.1 to 66
0 to 1.5
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 12 to 15
91.4 to 95.5
Phosphorus (P), % 0 to 0.045
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.75
3.0 to 4.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5