AWS ER120S-1 or ER83S-1 (K21030) Weld Metal
Alloy Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength930MPa
Yield Strength830MPa
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
0 to 0.1%
CR
0 to 0.6%
NI
2.0 to 2.8%
MO
0.3 to 0.65%
MN
1.4 to 1.8%
SI
0.25 to 0.6%
P
0 to 0.010%
S
0 to 0.010%
CU
0 to 0.25%
TI
0 to 0.1%
V
0 to 0.030%
AL
0 to 0.1%
RES.
Residuals res. | | 0 to 0.5%
RESIDUALS RES.
0 to 0.5%
ZR
0 to 0.1%
FE
92.4 to 96.1%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
17 %
Poisson's Ratio
0.29
Shear Modulus
73 GPa
Tensile Strength: Ultimate (UTS)
930 MPa
Tensile Strength: Yield (Proof)
830 MPa
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1410 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
46 W/m-K
Thermal Diffusivity
13 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
27 points
Electrical
Electrical Conductivity: Equal Volume
7.8 % IACS
Electrical Conductivity: Equal Weight (Specific)
9.0 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
150 MJ/m 3
Resilience: Unit (Modulus of Resilience)
1850 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
33 points
Strength to Weight: Bending
27 points
Environmental
Base Metal Price
4.2 % relative
Embodied Carbon
1.9 kg CO 2 /kg material
Embodied Energy
25 MJ/kg
Embodied Energy
25 MJ/kg 11 x 10 3 BTU/lb
Embodied Water
56 L/kg
Embodied Water
56 L/kg 6.7 gal/lb
Registered Designations & Aliases
AWS ER120S-1 or ER83S-1 (K21030) Weld MetalK21030