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What material is "10B21" ? 1

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Jonathan

Mechanical
Oct 24, 2000
3
US
Does anyone know what material "10B21" is and what a common cross reference may be ?

Thanks
 
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A carbon steel designated xxBxx is a Boron containing version of the regular steel, such as 1018 becomes 10B18 when Boron is added. Boron is added to improve hardenability and tweak oproperties.
 
Thank you everyone for your help. . .

Best regards
Jonathan
 
Dear Jonathan,

10B21 is a low carbon "Boron" bearing steel used for making cold headed bolts [Cold heading Quality].

Anup Kumar
 
Can anyone give me an idea on the machinability of 10B21? How does the Boron effect the machinability of 1021.
 
Boron would have no effect on machining, assuming you're machining the annealed part. Boron only affects the depth of hardening during quench.
 
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