ASTM A182 Grade F122 (K91271) Steel
Alloy Steels
Property Overview
Density8g/cm³
Elastic Modulus190GPa
Tensile Strength710MPa
Yield Strength450MPa
Brinell Hardness220HB
Maximum Service Temperature600°C
Chemical Composition
C
0.070 to 0.14%
CR
10 to 11.5%
NI
0 to 0.5%
MO
0.25 to 0.6%
MN
0 to 0.7%
SI
0 to 0.5%
N
0.040 to 0.1%
P
0 to 0.020%
S
0 to 0.010%
CU
0.3 to 1.7%
NB
0.040 to 0.1%
TI
0 to 0.010%
V
0.15 to 0.3%
AL
0 to 0.020%
W
1.5 to 2.5%
B
0 to 0.0050%
ZR
0 to 0.010%
FE
81.3 to 87.7%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
23 %
Fatigue Strength
320 MPa
Poisson's Ratio
0.28
Reduction in Area
45 %
Shear Modulus
76 GPa
Shear Strength
450 MPa
Tensile Strength: Ultimate (UTS)
710 MPa
Tensile Strength: Yield (Proof)
450 MPa
Hardness
Brinell Hardness
220
Physical
Density
8.0 g/cm 3
Thermal
Latent Heat of Fusion
270 J/g
Maximum Temperature: Mechanical
600 °C
Melting Completion (Liquidus)
1490 °C
Melting Onset (Solidus)
1440 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
24 W/m-K
Thermal Diffusivity
6.4 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
19 points
Electrical
Electrical Conductivity: Equal Volume
10 % IACS
Electrical Conductivity: Equal Weight (Specific)
12 % IACS
Calculated
PREN (Pitting Resistance)
17
Resilience: Ultimate (Unit Rupture Work)
140 MJ/m 3
Resilience: Unit (Modulus of Resilience)
520 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
25 points
Strength to Weight: Bending
22 points
Environmental
Base Metal Price
12 % relative
Embodied Carbon
3.0 kg CO 2 /kg material
Embodied Energy
44 MJ/kg
Embodied Energy
44 MJ/kg 19 x 10 3 BTU/lb
Embodied Water
100 L/kg
Embodied Water
100 L/kg 12 gal/lb
Registered Designations & Aliases
ASTM A182 Grade F122 (K91271) SteelK91271
Standards
ASTM A182 ASTM A182: Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service