English
English Chinese Simplified Chinese Traditional French German Portuguese Spanish Russian Japanese Korean Arabic Irish Greek Turkish Italian Danish Romanian Indonesian Czech Afrikaans Swedish Polish Basque Catalan Esperanto Hindi Lao Albanian Amharic Armenian Azerbaijani Belarusian Bengali Bosnian Bulgarian Cebuano Chichewa Corsican Croatian Dutch Estonian Filipino Finnish Frisian Galician Georgian Gujarati Haitian Hausa Hawaiian Hebrew Hmong Hungarian Icelandic Igbo Javanese Kannada Kazakh Khmer Kurdish Kyrgyz Latin Latvian Lithuanian Luxembou.. Macedonian Malagasy Malay Malayalam Maltese Maori Marathi Mongolian Burmese Nepali Norwegian Pashto Persian Punjabi Serbian Sesotho Sinhala Slovak Slovenian Somali Samoan Scots Gaelic Shona Sindhi Sundanese Swahili Tajik Tamil Telugu Thai Ukrainian Urdu Uzbek Vietnamese Welsh Xhosa Yiddish Yoruba Zulu Kinyarwanda Tatar Oriya Turkmen Uyghur
Leave Your Message
Temper Comparison of Copper Alloys Between ASTM and GB/T Standard
News

Temper Comparison of Copper Alloys Between ASTM and GB/T Standard

2025-08-12
Shanghai Nosinda Metal Co., Ltd is a high-tech enterprise focusing on the research, development, production and sales of high-performance sheet, coil, strip, tube, bar and wire of copper and copper alloys. While the temper for copper alloys differ significantly between American standard (ASTM) and Chinese standard (GB/T), and these differences can easily confuse customers. Therefore, a commonly used temper comparison chart and its definitions are crucial. 
Copper Sheet Heat Treatment
Copper Tube Heat Treatment
Temper Comparison of Copper Alloys: American Standard (ASTM) and Chinese Standard (GB/T)

Description ASTM Standard GB/T Standard Explanation of GB/T Standard
Soft/Annealed O M The material is fully annealed to achieve minimum strength, maximum plasticity and ductility.
Hard H Y The material obtains higher strength and hardness through cold processing (rolling, drawing, etc.), and its plasticity decreases.
1/4 Hard H01 Y4 The cold working deformation is small, and the strength and hardness are between soft and semi-hard temper.
Semi-hard H02 Y2 Moderate degree of cold working deformation, with moderate strength and plasticity.
3/4 Hard H03 Y1  The cold working deformation is large, the strength is high, and it is close to the hard temper.
Hard H04 Y After work hardening to have higher tensile strength and lower plastic deformation capacity.
Extra Hard H06 Y  The maximum degree of cold working deformation results in the highest strength and hardness (very low plasticity).

In short, the two major systems of American Standard and National Standard can basically reflect each other, but the specific application should be based on customer requirements or relevant product standards.
Contact Us

Tel: +86 176 0133 0366
Add: Zone A, Floor 1, Building 104, No. 1-30, Lane 88, Minbei Road, Minhang District, Shanghai, China