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About Us

Stainless steel and alloy materials for industrial applications worldwide

Current Position:

GB/T 1298—2008 Carbon Tool Steels

Specifies requirements for carbon tool steels, covering classification, dimensions, chemical composition, hardness, microstructure, decarburization, surface quality, testing, inspection, and delivery conditions for hot-rolled, forged, cold-drawn, and bright steel products.

GB/T 1299—2000 Alloy Tool Steels

Specifies requirements for alloy tool steels, covering classification, dimensions, chemical composition, hardness, microstructure, decarburization, surface quality, testing, inspection, packaging, marking, and quality certification for various tool steel products.

ASTM A453/A453M-17 High-Temperature Bolting

Specifies high-temperature bolting materials with thermal expansion comparable to austenitic stainless steels, covering five grades and twelve strength classes for bolts, screws, nuts, and studs used in pressure vessel and valve flanges.

ASTM B637-98 Precipitation-Hardening Nickel Alloys

Specifies requirements for precipitation-hardenable nickel alloy rods, bars, forgings, and forging stock for high-temperature service, covering chemical composition, heat treatment, mechanical properties, stress-rupture performance, dimensions, testing, inspection, and product quality.

ASTM B637-18 Precipitation-Hardening Nickel Alloys

Specifies requirements for precipitation-hardening and cold-worked nickel alloy rods, bars, forgings, and forging stock for moderate or high-temperature service, covering chemical composition, heat treatment, mechanical properties, dimensions, testing, and quality requirements.

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