15.1 For purposes of determining compliance with the specified limits for requirements of chemical composition, hardness, and electrical resistivity, an observed value or a calculated value shall be rounded to the nearest unit in the last right-hand place of the figures of the specified limit in accordance with the rounding method of Practice E29.
1.1 This specification establishes the requirements for seamless copper and copper-alloy rectangular tube intended for use as transmission lines in electronic equipment. Five types of material are specified having the following nominal compositions:2
Copper or Copper Alloy UNS2 No.
8201; Previously Used Designation
Nominal Composition, %
8201; Copper
8201; Zinc
Phos- phorus
C10100
Copper, Type OFEA
99.99B
...
...
C10200
Copper, Type OFA
99.95B
...
...
C10300
Copper, Type OFXLPA
99.95
ASTM B372-2012a由美国材料与试验协会 US-ASTM 发布于 2012。
ASTM B372-2012a 在中国标准分类中归属于: H62 重金属及其合金。
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15.1 For purposes of determining compliance with the specified limits for requirements of chemical composition, hardness, and electrical resistivity, an observed value or a calculated value shall be rounded to the nearest unit in the last right-hand place of the figures of the specified limit in accordance with the rounding method of Practice E29.
1.1 This specification establishes the requirements for seamless copper and copper-alloy rectangular tube intended for use as transmission lines in electronic equipment. Five types of material are specified having the following nominal compositions:2