TU3

1 source records. Standards, editions and conditions are presented separately; matching grade names do not establish interchangeability.

Refer to each source for mass fractions and analysis type. Missing values are not treated as 0. Manufacturer typical values, standard guarantees and measured heat results must remain separate. Use the material selector for calculations and condition selection.

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TU3 · GB/T 5231-2012

Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results

Material category: Copper and copper alloys
Material form: Reference record
Original record status: Original standard verified
Standard edition: GB/T 5231-2012
Table / clause: Table 1, row 5, designation C10200
PDF page references: 5

Carbon-equivalent reference

IIW / CEV: not directly applicable to this material category

Pcm (Ito–Bessyo): not directly applicable to this material category

CET: not directly applicable to this material category

Composition

Element	Composition requirement
O	≤ 0.001 (lower limit not stated)

Applicability and limitations

Mass fraction wt%; GB/T5231—2012, Table 1, row 5, designation C10200. A dash means unspecified and must not be entered as zero; The combined Cu+Ag minimum must not be split into independent minima for Cu and Ag. Table 1, note a: As, Bi and Sb need not be analyzed, but the supplier must guarantee that the respective limits are not exceeded. This standard covers wrought copper and copper-alloy designations and chemical composition; actual supply of cold-heading wire is not inferred.

Combined limits

Combined-element limits

Element coefficient
Cu
1
Ag
1
Lower limit
99.95
Requirement
Minimum total Cu + Ag

Elements requiring measured values from the same heat

Verification notes

Each cell in row 5 of Table 1 in the scanned original, together with applicable footnotes, was checked manually