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DIN1630-St37.4+NBK

thread177-245028

DIN1630-St37.4+NBK

DIN1630-St37.4+NBK

(OP)
What's the meaning of NBK?
What is the material equivalent in ASTM/AISI/JIS/UNI/AFNOR etc?

RE: DIN1630-St37.4+NBK

NBK stands for annealed above the upper transformation point under shielding gas or in a vacuum.

This particul DIN standard is world known and I don't think you need a ASTM equivalent.

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Paul van der Heijden
Composite Engineer
Vekoma Rides Manufacturing BV
Internet: www.vekoma.com
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