AWS ER70S-B2L or ER49S-B2L (K20500) Weld Metal
Alloy Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength590MPa
Yield Strength450MPa
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
0 to 0.050%
CR
1.2 to 1.5%
NI
0 to 0.2%
MO
0.4 to 0.65%
MN
0.4 to 0.7%
SI
0.4 to 0.7%
P
0 to 0.025%
S
0 to 0.025%
CU
0 to 0.35%
RES.
Residuals res. | | 0 to 0.5%
RESIDUALS RES.
0 to 0.5%
FE
95.3 to 97.6%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
22 %
Poisson's Ratio
0.29
Shear Modulus
73 GPa
Tensile Strength: Ultimate (UTS)
590 MPa
Tensile Strength: Yield (Proof)
450 MPa
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
40 W/m-K
Thermal Diffusivity
11 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
17 points
Electrical
Electrical Conductivity: Equal Volume
7.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.6 % IACS
Calculated
PREN (Pitting Resistance)
3.1
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m 3
Resilience: Unit (Modulus of Resilience)
530 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
20 points
Environmental
Base Metal Price
3.0 % relative
Embodied Carbon
1.6 kg CO 2 /kg material
Embodied Energy
21 MJ/kg
Embodied Energy
21 MJ/kg 9.1 x 10 3 BTU/lb
Embodied Water
54 L/kg
Embodied Water
54 L/kg 6.4 gal/lb
Registered Designations & Aliases
AWS ER70S-B2L or ER49S-B2L (K20500) Weld MetalK20500