The 2026 brass standards comparison guide begins with a practical reality: comparing copper alloy grades is not only a metallurgy decision, it is a documentation decision. A single purchase order can reference GB, JIS, DIN, UNS, and BS designations at the same time, and the supplier must be able to map each designation to an actual chemical composition. Jiangsu Xinxiangsheng Special Steel Co., Ltd. manufactures 17 product lines across pure copper, brass, bronze, and copper-nickel alloys, which makes its catalog a useful reference point for buyers reading a standards comparison.

Why Grade Cross-Referencing Drives Procurement Decisions

Standards systems were developed regionally, so equivalent materials carry different names. T2 copper is known as GB T2, JIS C1100, DIN SE-Cu, UNS C11000, and BS C101 in different markets. A buyer specifying only "conductive copper" leaves the composition open; a buyer specifying C1100 Cu+Ag 99.90 does not. This is why a comparison guide that anchors grades to chemistry, rather than to trade names, prevents substitution errors in wires, transformers, and switches. Jiangsu Xinxiangsheng Special Steel Co., Ltd. states grade reference equivalents alongside chemical composition examples, allowing domestic and export orders to be specified on the same sheet.

Pure Copper Grades Compared: T1 Through T4

The pure copper line covers T1, T2, T3, and T4, positioned for electrical, electronics, and equipment manufacturing where high electrical and thermal conductivity is required. Grade equivalents include T1 (GB T1 / JIS C1020 / DIN OF-Cu / UNS C10200 / BS C103), T2 (GB T2 / JIS C1100 / DIN SE-Cu / UNS C11000 / BS C101), and T3 (GB T3 / JIS C1221). Documented compositions show C1020 Cu+Ag 99.96 (T1), C1100 Cu+Ag 99.90 (T2), and C1221 Cu+Ag 99.75 with Ag 0.004-0.04 (T3).

2026 Brass Standards Comparison Guide:

Global Grade Review