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Priority claimed from JP09824294Aexternal-prioritypatent/JP3440547B2/en
Application filed by Daido Steel Co LtdfiledCriticalDaido Steel Co Ltd
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Publication of TW364927BpublicationCriticalpatent/TW364927B/en
A precipitation hardening steel excellent in machinability, toughness (10J/cm<SP>2</SP> or above), hardness (HRC43 or above) after aging treatment and suitable to a metallic mold for plastics, which consists by weight percentage of C: 0.05-0.18%, Si: 0.15-1.00%, Mn: 1.0-2.0%, Ni: 2.5-3.5%, Cr: 0.7-2.0%, Al: 0.5-1.5%, Cu: 0.7-1.7%, Mo: 0.1-0.4%, S: 0.05-0.35%, and the balance of Fe, and H-value obtained through the following equation indicates zero or a positive value: H=(3.843Mn+4.378Cr0.58)-(4.22OS+8.193).
TW084110500A1994-04-111995-10-05A high-toughness precipitation hardening steel for production of molds for plastic
TW364927B
(en)
Low-alloy carbon steel for the manufacture of pipes for the exploration and the production of oil and/or gas having an improved corrosion resistance, a process for the manufacture of seamless pipes, and the seamless pipes obtained therefrom