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Recent content by litwin
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needle valve corrosion resistance
Hello! Some needle valve manufacturers use 316 steel as the body material and 630 or 440C steel as the stem. As a mechanic, I understand their choice (the manufacturer provides a difference in hardness between the body and the stem). However, what about corrosion resistance? I think steel 630...- litwin
- Thread
- Replies: 2
- Forum: Corrosion engineering
