sae 5140 40Cr Steel round bar for Grade 8.8 bolts and nuts
sae 5140 40Cr Steel round bar for Grade 8.8 bolets and nuts
Alloy steel 40Cr / 41Cr4 / 5140 round bars
AISI 5140 / 40Cr alloy steel
Alloy steel 5140 steel round bar price per kg
sae 5140 40Cr Steel round bar for Grade 8.8 bolts and nuts
1.Equivalent grades
GB | ASTM | JIS | DIN | BS | NF |
| 40Cr | 5140 | SCr440 | 41Cr4(1.7035) | 530A40 | 42C4 |
2.Chemical composition
C | Si | Mn | Cr | Ni(≤) | Cu(≤) | P(≤) | S(≤) |
| 0.37-0.44 | 0.17-0.37 | 0.5-0.8 | 0.8-1.0 | 0.3 | 0.03 | 0.035 | 0.035 |
3.Mechenical property
Tensile strength | Yild strength | Elongation | reduction of area |
| Min (%) | Min (%) | Min (%) | Min (%) |
| Mpa | Mpa | Mpa | Mpa |
| 980 | 785 | 9 | 45 |
4.Packing detaiils:
1): Paint oil on the surface to protect steel bars from rusting.
2): Bundle packing by Iron Strips.
3): Bundle weight is from 2mt to 3 mt.
4): Two or three tags will be attached on each bundle.
5.Quality control
1.Processing Line:
Iron - hot metal pretreatment - Converter - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
Electric Furnace - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
2.Gas content level:O2 - <20 ppm H2 - <2 ppm N2- <100 ppm
3.Grain Sizes:5-8
6.Delivery condition:Hot rolled / cold drawn/Q+T/polished
Contact:MS. Phoebe Chen
Qingdao Helio Steel Co., Ltd. Was established in March19, 2012. Our company's business staff members possess professional service capabilities of steel products, with more than a decade of experience on steel production, technology development, product sales and foreign trade. We comply the principle of friendly cooperation and mutual benefit, and persist in developing together with new and old customers.
Our company is located in Qingdao, a coastal city of Shandong Province, which is near Laiwu Steel Group. Only Laiwu City has steel production capacity of 20 million tons each year. Meanwhile, it is also the largest production base of powder metallurgy products in the whole country. Otherwise, there are more than ten well-known steel manufacturers within the province and the surrounding areas, so steel resources here is abundant and we can meet customers' various requirements.
Our company is mainly engaged in steel products for various specifications and materials, such as continuous casting billets, continuous casting tubes, hot-rolled bars, tubes, hot-rolled square steel, flat steel, H section steel, hot-rolled coils, cold-roll large-size panels, forging materials, and forgings.
We also run the import and export of steel products, based on the needs of customers at home and abroad to develop a variety of special steel products and timely delivery. I hope to sincerely cooperate with domestic and foreign customers, providing high-quality and low-priced products and professional services.
