UNS N08028 (Alloy 28) Stainless Steel
Austenitic & General Stainless Steels
Property Overview
Density8.1g/cm³
Elastic Modulus200GPa
Tensile Strength570MPa
Yield Strength240MPa
Brinell Hardness180HB
Maximum Service Temperature1100°C
Chemical Composition
C
0 to 0.030%
CR
26 to 28%
NI
30 to 34%
MO
3.0 to 4.0%
MN
0 to 2.5%
SI
0 to 1.0%
P
0 to 0.030%
S
0 to 0.030%
CU
0.6 to 1.4%
FE
29 to 40.4%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
45 %
Fatigue Strength
220 MPa
Poisson's Ratio
0.28
Shear Modulus
80 GPa
Shear Strength
400 MPa
Tensile Strength: Ultimate (UTS)
570 MPa
Tensile Strength: Yield (Proof)
240 MPa
Hardness
Brinell Hardness
180
Rockwell B Hardness
80
Physical
Density
8.1 g/cm 3
Thermal
Latent Heat of Fusion
320 J/g
Maximum Temperature: Corrosion
460 °C
Maximum Temperature: Mechanical
1100 °C
Melting Completion (Liquidus)
1420 °C
Melting Onset (Solidus)
1370 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
12 W/m-K
Thermal Diffusivity
3.2 mm 2 /s
Thermal Expansion
16 µm/m-K
Thermal Shock Resistance
12 points
Calculated
PREN (Pitting Resistance)
39
Resilience: Ultimate (Unit Rupture Work)
210 MJ/m 3
Resilience: Unit (Modulus of Resilience)
140 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
19 points
Strength to Weight: Bending
19 points
Environmental
Base Metal Price
37 % relative
Embodied Carbon
6.4 kg CO 2 /kg material
Embodied Energy
89 MJ/kg
Embodied Energy
89 MJ/kg 38 x 10 3 BTU/lb
Embodied Water
240 L/kg
Embodied Water
240 L/kg 28 gal/lb
Registered Designations & Aliases
Alloy 28N08028UNS N08028 (Alloy 28) Stainless Steel
Standards
ASTM B668 ASTM B668: Standard Specification for UNS N08028 Seamless Pipe and Tube
ASTM B668 ASTM B668: Standard Specification for UNS N08028 Seamless Pipe and Tube ASTM B709: Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloy (UNS N08028) Plate, Sheet, and Strip Nickel Alloys, Ulrich Heubner (editor), 1998
ASTM B709 ASTM B709: Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloy (UNS N08028) Plate, Sheet, and Strip