一种固溶强化型耐热合金C‑HRA‑2氩弧焊用 焊丝，属于耐热合金焊接材料技术领域。焊丝成 分重量百分比为：C:0 .06‑0 .12％；Si＜1 .0％；Mn ＜1 .0％；P≤0 .015％；S≤0 .001％；Cr:20‑22％； Co:10‑13％；Mo:8 .1‑8 .8％；W:0 .1‑1 .0％；N≤ 0 .0025％；O≤0 .0025％；余量为Ni及不可避免的 杂质元素。优点在于，抗热裂纹敏感性提高90％， 从根本上消除了该类合金的焊接应变时效裂纹， 具有与母材相匹配的优异物理、力学性能和优良 的冲击韧性，焊接工艺性能优良，焊缝金属流动 性 好 ，焊 缝 成 形 性 好 ，且 生 产 成 本 比 现 有 ERNiCrCoMo‑1焊丝低10‑15％。 

The utility model relates to a welding wire for argon arc welding of a solid solution strengthening heat-resistant alloy C-HRA-2, which belongs to the technical field of heat-resistant alloy welding materials. The weight percentage of welding wire composition is C: 0.06-0.12%; Si＜1 .0％； Mn ＜1 .0％； P≤0 .015％； S≤0 .001％； Cr:20‑22％； Co:10‑13％； Mo:8 .1‑8 .8％； W:0 .1‑1 .0％； N≤ 0 .0025％； O≤0 .0025％； The residual is Ni and unavoidable impurity elements. The advantages are that the sensitivity of hot crack resistance is increased by 90%, the welding strain aging crack of this kind of alloy is eliminated fundamentally, the alloy has excellent physical and mechanical properties matching with the base metal, excellent impact toughness, excellent welding process performance, good weld metal fluidity, good weld formability, and the production cost is 10-15% lower than the existing ERNiCrCoMo-1 welding wire.