Swipe or use the arrows to view product images.
Hot Sale Factory Direct ASTM A193 Gr. B7 AISI 4140 GB 42CrMo Steel Round Bar
| Price | $1100.00 |
|---|---|
| Min Order | 1 Ton |
| Availability | In Stock |
| Shipping From | Hunan, China |
| Popularity | 395 people viewed |
Model NO.:
4140
Type:
Alloy Steel Bar
Standard:
AISI, ASTM, DIN, JIS, GB, BS
Composition:
Alloy
Technique:
Rolled or Forged
Shape:
Bar
Surface Treatment:
Polished or Other
Special Use:
for Oilfield
Application:
for Oilfield
Trademark:
SHUNFU
Transport Package:
Anti-Corrosion
Specification:
20-600mm
Origin:
China
HS Code:
7228600000
Product Description
AISI 4140 G41400 Alloy Steel Round Bar
4140 Steel Introduce
AISI 4140 steel is a low alloy steel containing chromium, molybdenum, and manganese. It is widely used across numerous industries and is an excellent material choice due to its toughness, high fatigue strength, and abrasion and impact resistance. Not many grades can match the versatility and usefulness of 4140.4140 Steel Applications
This alloy finds many applications as forgings for the aerospace and oil and gas industries, along with myriad uses in the automotive, agricultural and defense industries, Typical uses are forged gears and shafts, spindles, fixtures, jigs and collars.4140 Steel Chemical Properties
| Grade | C | Cr | Mn | Si | Mo | S | P |
| 4140 | 0.38-.43% | 0.80-1.10% | 0.75-1.0% | 0.15-0.30% | 0.15-0.25% | 0-0.040% | 0-0.035% |
4140 Steel Mechanical Properties
| Properties | Metric | Imperial |
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength | 415 MPa | 60200 psi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 25.70% | 25.70% |
| Hardness, Brinell | 197 | 197 |
| Hardness, Knoop (converted from Brinell hardness) | 219 | 219 |
| Hardness, Rockwell B (converted from Brinell hardness) | 92 | 92 |
| Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) | 13 | 13 |
| Hardness, Vickers (converted from Brinell hardness) | 207 | 207 |
| Machinability (based on AISI 1212 as 100 machinability) | 65 | 65 |
Heat Treatment
AISI 4140 alloy steel is heated at 845°C (1550°F) followed by quenching in oil. Before hardening, it can be normalized by heating it at 913°C (1675°F) for a long period of time, followed by air cooling.Forging
AISI 4140 alloy steel is forged at 926 to 1205°C (1700 to 2200°F)Hot Working
AISI 4140 alloy steel can be hot worked at 816 to 1038°C (1500 to 1900°F)Cold Working
AISI 4140 alloy steel can be cold worked using conventional methods in the annealed condition.Annealing
AISI 4140 alloy steel is annealed at 872°C (1600°F) followed by slowly cooling in the furnace.Tempering
AISI 4140 alloy steel can be tempered at 205 to 649°C (400 to 1200°F) depending upon the desired hardness level. The hardness of the steel can be increased if it has a lower tempering temperature. For example, a tensile strength of 225 ksi can be achieved by tempering at 316°C (600°F), and tensile strength of 130 ksi can be achieved by tempering at 538°C (1000°F).Hardening
AISI 4140 alloy steel can be hardened by cold working, or heating and quenching.Machinability
AISI 4140 alloy steel has good machinability in the annealed condition.Forming
AISI 4140 alloy steel has high ductility. It can be formed using conventional techniques in the annealed condition. It requires more pressure or force for forming because it is tougher than plain carbon steels.Welding
AISI 4140 alloy steel can be welded using all conventional techniques. However, the mechanical properties of this steel will be affected if it is welded in the heat-treated condition, and post-weld heat treatment should be performed.
- Similar Products
Negotiable
1 Ton (MOQ)
1.2008 135Cr3 Cold Working Tool Steel
Ningbo Ningshing Precision Machinery Group Co., Ltd.