Grade 630 steel plate sheet is known for grade 630 steel plate sheet resistance to stress-corrosion cracking, and grade 630 steel plate sheet is used in a wide variety of industries and applications including:
Valves and gears
Oil field equipment
Propeller shafts
Pump shafts
Valve spindles
Aircraft and gas turbines
Nuclear reactors
Paper mills
Chemical processing equipment

Grade | C | Mn | Si | P | S | Cr | Ni | Cu | Nb+Ta | |
630 | min. max | - 0.07 | - 1 | - 1 | - 0.04 | - 0.030 | 15 17.5 | 3 5 | 3 5 | 0.15 0.45 |
Aerospace – piston engine manifolds
Chemical Processing
Expansion Joints
Food Processing – equipment and storage
Petroleum Refining – polythionic acid service
Waste Treatment – thermal oxidizers


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