Copper material grade types
1, copper material grade: the color is purple-red copper material. Copper material also includes pure copper, oxygen-free copper, phosphorus deoxidation copper and special copper materials.
2, brass material grade: is a copper-zinc alloy material.
3, bronze material grade: the original refers to copper-tin alloy materials, and later referred to in addition to brass, copper alloy materials other than white copper.
4, white copper material grade: nickel as the main added elements, silver-white, metallic luster of copper-based alloy materials.
China's copper material grade expression method of China's national standards, the processing of copper and copper alloy grades named "copper type code, chemical symbols after the elemental content or sequence number" that, among them, the type of copper code to take the first Chinese character in Hanyu Pinyin the first capital letters, "T T" stands for pure copper, 'Q' stands for bronze, and 'B' stands for white copper.
U.S. Copper Material Grades
The United States UNS numbering system (ASTME527) provides that copper and copper alloys are used as a 5-digit code, expressed as "C + xxxxx (five digits)", of which, the processing of copper as "Cl0000?C15999", "C15999", "C15999", "C15999", "C15999", "C15999", "C15999", "C15999", "C15999", "C15999". C16000?C79999" for processed copper alloy. This code system is based on the past 3-digit code, by the American Society for Testing and Materials and the American Society of Motor Engineers common research and development, and become the United States of America metals and alloys unified numerical code system (UNS) components.
Japan's copper material numbering method Japan Industrial Standards (JIS) processing copper alloy numbering method and the United States UNS number is basically the same (less than a number). That is: C + XXXX (four digits). The first digit indicates the alloy series, with 2 to 9.
The meaning of the numbers are as follows:
2 - copper-zinc alloy;
3 - copper-zinc lead alloy;
4 - copper-zinc-tin alloy;
5 - copper-tin system, copper-tin-lead system alloy;
6 - copper-aluminum system, copper-silicon system, special copper-zinc system alloys;
7 - copper-nickel, copper-nickel-zinc alloys;
8, 9 - not yet used.
German copper material grade expression
In the German Industrial Standard (din), there are two systems for the representation of non-ferrous materials. One is a grade number composed of chemical element symbols, marking letters and Arabic numerals; the other is a 7-digit numerical designation system. In the current DIN technical standard documents, the two systems are used in parallel and listed against each other.
A Chemical element-based grade numbering method
According to DIN1700-1954, the grade number of processed copper and copper alloys generally consists of two parts:
(1) Marking letters indicating the manufacturing method and application range.
(2) A direct indication of the alloy composition. For example: see the table of copper alloys.
B numerical code representation
The 7-digit numerical designation is specified in DIN 17007-1956 in the following form:
X-XXXX-XX (i.e., group number - category number - additional number)
Where: group number - a total of 10 major groups, copper and copper alloys are group 2;
Category No. - indicates the specific alloy, which is mainly compiled according to the chemical composition and preparation method of the material;
Additional number - used to mark such as melting, pouring, heat treatment and whether the way of work hardening and shape, surface condition.
International copper material grade expression
The International Organization for Standardization standard (ISO 1190/1-1982) provides that copper and copper alloy grades are expressed in terms of the chemical composition of the material. All grades should be preceded by the prefix "ISO", but "ISO" may be omitted for simplicity when it is obvious from the international standard or communication that an ISO grade is to be used. The international chemical element symbols shall be used for the base elements and major alloying elements, followed by a letter characterizing the metal or a number indicating the nominal composition of the alloy.
