Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
UNS C68700 and UNS C21000 are both brass grades.
Both fall under the Brass Alloys category.
UNS C68700 is defined under Unified Numbering System (UNS), originating from United States, while UNS C21000 is defined under Unified Numbering System (UNS), originating from United States.
As per chemical composition, UNS C68700 vs UNS C21000 is a 63.3% match.
As per mechanical properties, the match is 45.8%.
Combined, this makes them a minimal match overall at 35%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
UNS C68700
UNS C21000
Yield Strength
~200-250 MPa (O61 annealed)
~220-280 MPa (H02 half-hard)
Tensile Strength
~350-390 MPa (O61 annealed)
~330-380 MPa (H02 half-hard)
Elongation
~20-30% (O61 annealed)
~20-40% (H02 half-hard)
Note
Aluminium brass (condenser tube alloy), values for O61 annealed condition
Gilding metal, values for H02 half-hard temper, common bar/coin stock
Key Differences
UNS C68700 specifies Al, As which are not specified for UNS C21000.
Can UNS C68700 Be Substituted With UNS C21000?
UNS C68700 and UNS C21000 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between UNS C68700 and UNS C21000?
UNS C68700 specifies Al, As which are not specified for UNS C21000.
Can UNS C68700 be substituted with UNS C21000?
UNS C68700 and UNS C21000 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.