Asme sa-182/sa-182m forged or rolled alloy steel nominal pipe flanges, forged fittings, valves and parts for high temperature.
Asme sa182f112.
UNS K 1 1572, Cr-Mo alloy, Cr-Mo alloy
ASME SA 182 is the standard number of American ASME society (American society of mechanical engineers):
The chemical composition (%) of sa-182-f11cl2 is as follows:
Cr: 1.00~ 1.5
Mo:0.44~0.65
C:0. 10~0.20
Si:0.50~ 1.00
Manganese: 0.30-0.80
P:0.040
Student: 0.040
It is a common heat-resistant low-alloy steel forging in the United States, and its relative composition is/kloc-0 1.25Cr0.5Mo
15CrMo steel is a pearlite heat-resistant steel with high thermal strength (Δ b ≥ 440 MPa), oxidation resistance and hydrogen corrosion resistance at high temperature.
Because of the high content of alloying elements such as Cr and C in steel, the hardening tendency of steel is obvious and the weldability is poor.
Extended data:
Solderability:
1, welding material
According to the working characteristics of weldability of 15CrMo steel, previous experience and reference to welding process cards provided by foreign countries, we chose two schemes for welding test.
Option 1:
Welding preheating, using ER80S-B2L welding wire, TIG welding as backing, E80 18-B2 covered electrode and covered electrode arc welding covering, and local heat treatment after welding.
Option 2:
ER80S-B2L welding wire is used, TIG welding is used for backing, and E309Mo- 16 coated covered electrode and coated covered electrode are used for arc welding, and no heat treatment is carried out after welding. See table 1 for the chemical composition and mechanical properties of welding wire and covered electrode.
2. Test results
Test scheme tensile test bending test impact toughness test aky(J/cm2)
Tensile strength δ b/MPa; The heat affected zone (HAZ) where the fusion line of the plane weld is reversed at the fracture.
Scheme I 550/530 substrate 50. Qualified 84.8 162 135.6
Scheme Ⅱ 525/520 Basic material 50. Qualified qualified 79.4 109.2 96.7
Baidu encyclopedia-15CrMo