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DIN1630-St37.4+NBK

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juniiee

juniiee

Industrial
Apr 19, 2009
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What's the meaning of NBK?
What is the material equivalent in ASTM/AISI/JIS/UNI/AFNOR etc?
 
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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: ----------------------------------------
 
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