Alloy Steel
Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low-alloy steels and high-alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0%
Alloy steel is often subdivided into two groups: high alloy steels and low alloy steels. The difference between the two is defined somewhat arbitrarily.
Hexion Steel & Engineering provides alloy steel in all mill forms including sheet, strip, plate, foil, round bar, square bar, flat bar, hex bar, tube, pipe and wire.
Available forms is Alloy 20
- Sheet
- Plate
- Bar
- Pipe & Tube (welded & seamless)
- Tubing
- Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
- Wire
Alloy 20 Specifications
| Bar |
ASTM B 473 |
| Plate |
ASME SB-463, ASME SB-464, ASTM B 463, ASTM B 464 |
| Sheet |
ASME SB-463, ASME SB-464, ASTM B 463, ASTM B 464 |
| Strip |
ASME SB-463, ASME SB-464, ASTM B 463, ASTM B 464 |
| Wire |
ASME SB-473 ASME SB-366, ASTM B 473, ASTM B 366 |
| Weld Wire |
AWS ER320LR |
| Other |
UNS N08020, Covered Electrodes AWS E320LR |
Chemical Composition, %
| Ni |
Fe |
Cr |
Cu |
Mo |
Nb |
| 32.00-38.00 |
Balance |
19.0-21.0 |
3.0-4.0 |
2.0-3.0 |
8xC-1.0max |
| C |
Mn |
P |
S |
Si |
|
| .07max |
2.0max |
.045max |
.035max |
1.0max |
|
ASTM Specification
| Pipe Smls |
Pipe Welded |
Tube Smls |
Tube Welded |
Sheet/Plate |
Bar |
Forging |
Fitting |
| B729 |
B464 |
B729 |
B468 |
B463 |
B473 |
B462 |
B366 |
Mechanical Properties
Annealed Material
| Form |
Tensile Min. |
Yield Min. (.2% offset) |
Elongation Min. |
Reduction of Area Min. |
| Bar (hot or cold finished) |
80 ksi |
35 ksi |
30% |
50% |
| Sheet/Plate |
80 ksi |
35 ksi |
30% |
- |
Main Export Market
- Eastern Europe
- North America
- Mid East/Africa
- Central/South America
- Asia
- Western Europe
- Australasia
- UAE
Sales Locations
U.A.E,
Oman,
Saudi Arabia,
Qatar,
Bahrain,
Egypt,
Turkey
Singapore,
Thailand,
Malaysia
Indonesia
Poland
Italy
Portugal
Spain
Brazil
Chile
Venezuela
Costa Rica
USA
Canada
Angola
Sri Lanka
Russia
