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AISI 439 Stainless Steel vs. AISI 202 Stainless Steel

Both AISI 439 stainless steel and AISI 202 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 33 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 AISI 439 stainless steel and the bottom bar is AISI 202 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
210 to 300
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
14 to 45
Fatigue Strength, MPa 170
290 to 330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 310
490 to 590
Tensile Strength: Ultimate (UTS), MPa 490
700 to 980
Tensile Strength: Yield (Proof), MPa 250
310 to 580

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 530
410
Maximum Temperature: Mechanical, °C 890
910
Melting Completion (Liquidus), °C 1510
1400
Melting Onset (Solidus), °C 1430
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.3
2.8
Embodied Energy, MJ/kg 34
40
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 18
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 160
250 to 840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
25 to 35
Strength to Weight: Bending, points 18
23 to 29
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 16
15 to 21

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 17 to 19
17 to 19
Iron (Fe), % 77.1 to 82.8
63.5 to 71.5
Manganese (Mn), % 0 to 1.0
7.5 to 10
Nickel (Ni), % 0 to 0.5
4.0 to 6.0
Nitrogen (N), % 0 to 0.030
0 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0.2 to 1.1
0