R307とR307Cの溶接棒の違いと使用範囲
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皆さん、質問があります。15CrMoの溶接にはR307が使用されますが、R307Cも使われることがあります。Cを添加したものは耐水素用の溶接棒だと言われていますが、これがその違いなのでしょうか？ ありがとう
ランクが違うだけで、Cは成分に対する要求がもっと厳しいです
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