Sus630 is martensite precipitation hardening stainless steel. It has high strength, high hardness, good welding performance and corrosion resistance. It has been widely used in valves, shafts and chemical fiber industries and high-strength parts with certain corrosion resistance requirements.
Characteristics and application range of precipitation hardening steel sus630 containing copper. Used for manufacturing shaft and steam turbine parts.
Mechanical properties of sus630;
Tensile strength σ b (MPa): aged at 480℃, ≥1310; Aging at 550℃, ≥1060; Aging at 580℃, ≥1000; Aging at 620℃, ≥930
Conditional yield strength σ 0.2 (MPa): aged at 480℃, ≥1180; Aging at 550℃, ≥1000; Aging at 580℃, ≥ 865; Aging at 620℃, ≥725
Elongation δ 5 (%): aged at 480℃, ≥10; Aging at 550℃, ≥12; Aging at 580℃, ≥13; Aging at 620℃, ≥ 16
Area shrinkage ψ (%): aging at 480℃, ≥ 40; Aging at 550℃, ≥ 45; Aging at 580℃, ≥ 45; Aging at 620℃, ≥50
Hardness: solid solution, ≤363HB and ≤ 38 HRC; Aging at 480℃, ≥375HB and ≥ 40 hours RC; Aging at 550℃, ≥33 1HB and ≥ 35 HRC; Aging at 580℃, ≥302HB and ≥3 1HRC; Aging at 620℃, ≥277HB and ≥28HRC.
Heat treatment specification and metallographic structure of sus630;
Heat treatment specification: 1) solid solution 1020 ~ 1060℃ rapid cooling; 2) aging at 480 DEG C, and air cooling at 470-490 DEG C after solution treatment; 3) aging at 550 DEG C, and air cooling at 540-560 DEG C after solution treatment; 4) aging at 580 DEG C, and air cooling at 570-590 DEG C after solution treatment; 5) aging at 620℃, solid solution treatment and air cooling at 6 10 ~ 630℃.
Metallographic structure of sus630: Metallographic structure is characterized by precipitation hardening.
Application fields of sus630:
Offshore platforms, helicopter decks, other platforms, food industry, pulp and paper industry, aerospace (turbine blades) mechanical parts, nuclear waste barrels.
Sus630 main specifications:
Sus630 seamless pipe, sus630 steel plate, sus630 round steel, sus630 forging, sus630 flange, sus630 circular ring, sus630 welded pipe, sus630 steel strip, sus630 straight bar, sus630 welding wire and its supporting welding materials, sus630 round cake, sus630 flat steel, sus630 hexagonal bar, sus630 big head, Sus630 hexagonal bar.
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