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将新型６７ＣｒＶＡ钢丝用于ＷＤ６１５－６８发动机气阀外弹簧，其弹簧性能试验表明，与进口弹簧相似，符合ＺＱ／Ｊ３００６—８６标准要求，是一种抗松弛性能较好的材料。
The new 67CrVA steel wire for the WD615-68 engine valve spring, the spring performance tests showed that similar to the imported spring, ZQ / J3006-86 standard requirements, is a good anti-relaxation properties of the material.