We always adhere to starting from small things, pay attention to details, emphasize standardization, constantly meet the needs of customers and the market and provide customers with high-quality, efficient and personalized Super duplex stainless steel sheet, 1.3355 High Speed Steel Bar, Stainless Steel Plate and services. We are adhering to the brand concept of 'creating high-quality goods, brand upgrading, customer orientation, service first', constantly researching and exploring, improving ourselves, and keeping up with the pace of the times. Our company guarantees the interests of users. Owing to excellent assistance, a variety of high quality products and solutions, aggressive costs and efficient delivery, we take pleasure in an excellent popularity amongst our customers.
4140 steel bar
Sichuan Liaofu Special Steel Industry Co., Ltd has been in steel area for more than ten years, focus on producing 4140 42crmo4 4130 4135 scm440 25crmo4 1010 1020 1045 seamless steel tube, the branch office started in jiangshu on the business of steel pipes.

Product advantage highlights:
The standard is listed below
USA ASTM4140
JapanSCM440
Germany 42CRMO4 1.7725 steel bar
Hot rolled bar
Forged steel bar


42CrMo steel belongs to ultra high strength steel, with high strength and toughness, hardenability is also good.
Technical parameters
Specifications | |
Chemical component | C :0.38~0.45% Si:0.17~0.37% Mn:0.50~0.80% S :≤0.035% P :≤0.035% Cr:0.90~1.20% Ni:≤0.30% Cu:≤0.30% Mo:0.15~0.25%[ |
Mechanical property | Tensile strengthσb/MPa):≥1080 Yield strength(σs/MPa):≥930 Elongation (δ5/%):≥12 |
Stock 4140 steel bar

We adhere to the principle of "quality and service are the foundation", adhere to quality first, and win service. We not only provide users with satisfactory steel products, but also provide professional product consulting and after-sales service, which have been favored and praised by our customers. With the advancement of knowledge economy, we sincerely hope to cooperate with you for innovation and development.

Our Service

Since we use standard assembly line production equipment, our ASTM AISI 4140 42CrMo4 1045 S20 Cold Drawn Steel Round Bar is more formal, reliable in quality and inexpensive. We continue to innovate and produce new applicable products. We sincerely welcome you to come to the company to negotiate business and provide valuable suggestions. We have our own sales team, design team, technical team, QC team and package team.

