Product Overview
| Products Name |
Steel Plate |
| Type |
Carbon Steel Plate, Alloy Steel Plate, Special Steel Plate |
| Thickness Range |
3.0 - 150mm |
| Width Range |
1000 - 2500mm as request |
| Length Range |
Within 12m |
| Brand |
BAOSTEEL, XINGCHENG, HBIS, BENSTEEL, TANGSHAN, HANSTEEL |
| Company Type |
Factory and storage |
| MOQ |
1 Ton |
Available Steel Grades
| Structural Steel |
A283, A36, ABS Grade A, Grade B, Grade ADH36, Grade DH36, Grade EH36, A514 T-1, A572 GR 50 |
| HSLA Structural Steel |
A588, A656 GR80, A690 |
| Pressure Vessel Steel |
A285 GR C, A515 GR 70, A516 GR 70, SA537 |
| Abrasion Resistant Steel |
AR360, AR400, AR450, AR500 |
| Alloy Steel |
5130, 5140, 5150, 4130, 4140 |
AISI 5140 Alloy Steel Specifications
Material Description
AISI 5140 alloy steel offers excellent comprehensive mechanical properties and is widely used for manufacturing medium-speed, medium-load components. This steel type is ideal for machine tool gears, shafts, worms, spline shafts, and similar applications. Compared to 1045 steel, 5140 provides superior tensile strength, yield strength, hardenability, fatigue strength, and toughness while maintaining good machinability in normalized or tempered conditions.
Available Forms
We supply AISI 5140 steel in various forms including round bars, flat bars, plates, hexagonal bars, and square blocks. Round bars can be custom-cut to required lengths, while rectangular pieces can be sawn from flat bar or plate to your specific dimensions. Precision ground tool steel bars are also available with tight tolerances.
Chemical Composition
| Element |
Percentage (%) |
| Carbon (C) |
0.38 - 0.43 |
| Silicon (Si) |
0.15 - 0.35 |
| Manganese (Mn) |
0.70 - 0.90 |
| Phosphorus (P) |
≤ 0.025 |
| Sulfur (S) |
≤ 0.040 |
| Chromium (Cr) |
0.70 - 0.90 |
| Molybdenum (Mo) |
0.06 Max |
| Nickel (Ni) |
0.25 Max |
International Equivalents
| USA |
ASTM/AISI/UNS/SAE 5140 / G51400 |
| Germany |
DIN, WNr 41Cr4 / 1.7035 |
| China |
GB 40Cr |
| Japan |
JIS SCr440 |
| France |
AFNOR 42C4 |
| England |
BS 530A40 / 530M40 |
Heat Treatment Parameters
Quenching:
820-850°C (water), 830-860°C (oil)
Material Characteristics
- Excellent hardenability
- Superior performance with high-frequency quenching after QT treatment
- Outstanding machinability
Typical Applications
- Gears and shafts for mechanical equipment
- Alloyed case hardening steel for parts requiring core tensile strength of 1000-1300 N/mm²
- Components requiring good wearing resistance: boxes, piston bolts, spindles, camshafts
- Wheels, stopcocks, worms, spline shafts, main shafts
- Oil pump rotors, sliding blocks, lantern rings
Product Images
