sae5140 aisi5140 steel round bar for bolts and nuts
We are offering a wide range of sizes from 20mm to 800mm bar 40Cr that is extensively used as components in many machines and equipments. Available in varied sizes, these bars are widely appreciated for their quality and dimensional accuracy attributes. These are available at industry leading prices and can also be customized as per requirements of our clients.
Specifications are as following:
40Cr AISI5140 SAE5140 ASTM5140 SCr440 41Cr4 1.7035 530A40 530M40 |
Chemical composition(%) |
C |
0.48-0.53 |
Si |
0.15-0.35 |
Mn |
0.75-1.00 |
P |
≤ 0.035 |
S |
≤ 0.035 |
Ni |
≤ 0.25 |
Cr |
0.80-1.10 |
Mo |
0.15-0.25 |
Cu |
≤ 0.35 |
V |
0.012-0.030 |
Tensile strength (N/mm2Mpa) |
≥980 |
Elongation ( % ) |
≥9 |
Yield strength |
≥785 |
Hardness( HBS ) |
≤20 |
Reduction of area |
≥45% |
Delivery condition |
EAF + LF + VD, Hot rolled/Forged, annealed, black/peeled/machined, UT tested |
Application |
Use for mould and hardware part, the fastening piece, machine elements, sleeve gear, extrusion dies and die-casting for aluminum |
1. Dimension Range
Hot-rolled: 16mm-300mm
Cold-drawn: 10mm-100mm
Forged: 200mm-800mm
2. Dimensional toleance
Hot-rolled steel round or square bar:
d/a(mm) |
5.5-7 |
7-20 |
20-30 |
30-50 |
50-80 |
80-110 |
110-150 |
150-190 |
190-250 |
(mm) |
+0.30
-0.30 |
+0.35
-0.35 |
+0.40
-0.40 |
+0.50
-0.50 |
+0.70
-0.70 |
+1.0
-1.0 |
+1.3
-1.3 |
+2.0
-2.0 |
+2.5
-2.5 |
Cold-drawn bar:
Shape |
Round bar |
Square bar |
Hexagon bar |
Grade |
8,9,10,11,12 |
10,11,12,13 |
l0,11,12,13
|
3. Electric Furnace - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
4. .Gas content level:O2 - <20 ppm H2 - <2 ppm N2- <100 ppm
5.Grain Sizes:5-8
sae5140 aisi5140 steel round bar for 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.
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.
