ASTM Grade HH (25Cr-12Ni, J93503) Cast Stainless Steel
Austenitic & General Stainless Steels
Property Overview
Density7.7g/cm³
Elastic Modulus200GPa
Tensile Strength580MPa
Yield Strength270MPa
Brinell Hardness170HB
Maximum Service Temperature1100°C
Chemical Composition
C
0.2 to 0.5%
CR
24 to 28%
NI
11 to 14%
MO
0 to 0.5%
MN
0 to 2.0%
SI
0 to 2.0%
P
0 to 0.040%
S
0 to 0.040%
FE
52.9 to 64.8%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
11 %
Fatigue Strength
150 MPa
Poisson's Ratio
0.27
Shear Modulus
79 GPa
Tensile Strength: Ultimate (UTS)
580 MPa
Tensile Strength: Yield (Proof)
270 MPa
Hardness
Brinell Hardness
170
Physical
Density
7.7 g/cm 3
Thermal
Latent Heat of Fusion
310 J/g
Maximum Temperature: Corrosion
440 °C
Maximum Temperature: Mechanical
1100 °C
Melting Completion (Liquidus)
1400 °C
Melting Onset (Solidus)
1360 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
14 W/m-K
Thermal Diffusivity
3.8 mm 2 /s
Thermal Expansion
17 µm/m-K
Thermal Shock Resistance
12 points
Electrical
Electrical Conductivity: Equal Volume
2.1 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.4 % IACS
Calculated
PREN (Pitting Resistance)
27
Resilience: Ultimate (Unit Rupture Work)
53 MJ/m 3
Resilience: Unit (Modulus of Resilience)
190 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
20 points
Environmental
Base Metal Price
20 % relative
Embodied Carbon
3.7 kg CO 2 /kg material
Embodied Energy
53 MJ/kg
Embodied Energy
53 MJ/kg 23 x 10 3 BTU/lb
Embodied Water
180 L/kg
Embodied Water
180 L/kg 22 gal/lb
Registered Designations & Aliases
25Cr-12NiASTM Grade HH (25Cr-12Ni, J93503) Cast Stainless SteelJ93503
Standards
ASTM A297 ASTM A297: Standard Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application
ASTM A297 ASTM A297: Standard Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012