Is 10B21 steel equivalent to AISI 1020-1030 steels?
Is 10B21 steel equivalent to AISI 1020-1030 steels?
(OP)
A Chinese supplier is telling me that 10B21 steel is equivalent material to AISI 1020-1030 steel.
My material lab tells me that the chem analysis indicates that the material is AISI 1021.
My customer specifies AISI 1020- 1030 material and I'm concerned about providing what he specified.
Thanks in advance for your help.
My material lab tells me that the chem analysis indicates that the material is AISI 1021.
My customer specifies AISI 1020- 1030 material and I'm concerned about providing what he specified.
Thanks in advance for your help.





RE: Is 10B21 steel equivalent to AISI 1020-1030 steels?
RE: Is 10B21 steel equivalent to AISI 1020-1030 steels?
The general use of a drawing note "1020-1030" means that any grade from 1020 to 1030 in SAE J403 (or ASTM A 29, etc.) is acceptable, which would give a list of the following grades: 1020, 1021, 1023, 1025, 1026, 1029, 1030. I would add the caveat that if there is a heat treatment requirement, e.g. quench and temper to 28-38 HRC, then any of the above grades with a boron addition would be acceptable. If it is the latter, then 10B21 would be acceptable. If it is the former, then you are in a really gray area.