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Alloy Steel

Products

Alloy steel is a type of steel alloyed with several elements such as molybdenum, manganese, nickel, chromium, vanadium, silicon, and boron. These alloying elements are added to increase strength, hardness, wear resistance, and toughness. The amounts of alloying elements may vary between 1 and 50%.

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Alloy Steel Grades :


Steel category ASTM / ASME standard
Low Alloy Steel Plate Low Alloy Steel Pipe SMAW Electrode/ Rod Flux Cored Wires
0.5%Mo A204 Grade A,B,C A336 Grade F1 A209 Grade T1 A335 Grade P1 GL76/78A1 GMX 811A1
0.5%Cr-0.5%Mo A387 Grade 2 CI.1,2 A213 Grade T2 A335 Grade P2 GL86/88B1
1.25%Cr-0.5%Mo A387 Grade 12 Cl.1,2 A387 Grade 11 CI.1,2 A336 Grade F11 A213 Grade T11, 12 A335 Grade P11, 12 A182 Grade F11 GL86/88B2 GMX 811B2
2.25%Cr-1.0%Mo A387 Grade 22 CI.1,2 A336 Grade F22 A213 Grade T22 A335 Grade P22 A182 Grade F22 GL86/88B3 GMX 911B3
5.0%Cr-0.5%Mo A387 Grade 5 CI.1,2 A335 Grade P5 GL86/88B6
9.0%Cr-1.0%Mo A387 Grade 9 CI.1,2 A335 Grade P9 GL86/88B8

Chemical Compositions:

Element

Symbol

wt. %

Aluminium

Al

0.95–1.30

Bismuth

Bi

–

Boron

B

0.001–0.003

Chromium

Cr

0.5–2.0

4–18

Copper

Cu

0.1–0.4

Lead

Pb

–

Manganese

Mn

0.25–0.40

>1

Molybdenum

Mo

0.2–0.5

Nickel

Ni

2–5

12–20

Silicon

Si

0.2–0.7

2

Higher %

Sulfur

S

0.08–0.15

Titanium

Ti

–

Tungsten

W

–

Vanadium

V

0.15

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