ASTM A369 Grade FP9 Cr-Mo Steel
Alloy Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength470MPa
Yield Strength240MPa
Brinell Hardness140HB
Maximum Service Temperature600°C
Chemical Composition
C
0 to 0.15%
CR
8.0 to 10%
MO
0.9 to 1.1%
MN
0.3 to 0.6%
SI
0.5 to 1.0%
P
0 to 0.030%
S
0 to 0.030%
FE
87.1 to 90.3%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
20 %
Fatigue Strength
160 MPa
Poisson's Ratio
0.28
Shear Modulus
75 GPa
Shear Strength
300 MPa
Tensile Strength: Ultimate (UTS)
470 MPa
Tensile Strength: Yield (Proof)
240 MPa
Hardness
Brinell Hardness
140
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
270 J/g
Maximum Temperature: Mechanical
600 °C
Melting Completion (Liquidus)
1450 °C
Melting Onset (Solidus)
1410 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
26 W/m-K
Thermal Diffusivity
6.9 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
13 points
Electrical
Electrical Conductivity: Equal Volume
9.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
10 % IACS
Calculated
PREN (Pitting Resistance)
12
Resilience: Ultimate (Unit Rupture Work)
80 MJ/m 3
Resilience: Unit (Modulus of Resilience)
140 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
17 points
Strength to Weight: Bending
17 points
Environmental
Base Metal Price
6.5 % relative
Embodied Carbon
2.0 kg CO 2 /kg material
Embodied Energy
28 MJ/kg
Embodied Energy
28 MJ/kg 12 x 10 3 BTU/lb
Embodied Water
87 L/kg
Embodied Water
87 L/kg 10 gal/lb
Registered Designations & Aliases
ASTM A369 Grade FP9 Cr-Mo Steel
Standards
ASTM A369 ASTM A369: Standard Specification for Carbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Service