AISI 5140 Steel Round Bar Plate Sheet, DIN 1.7035, JIS SCr440
AISI 5140 steel also can be called JIS Scr440 and DIN 1.7035 steel. It is one of the alloy steel as well as the most popular steel grades in the productions of the machine. The AISI 5140 steel round bar price is on the medium level and it was easy to processing. After tempering and quenching, the toughness, plasticity and wearing resistance of it will get better. Steel normalizing can make the spheroidizing for the organization of steel get easier. And it will raise the machinability of the semi-finished product with the hardness less than 160HBS. Tempering it at the temperature of 550℃-570℃ which can make it get better mechanical property. And the hardenability of it is higher than S45C steel. You can check 5140 Steel chemical composition and mechanical properties as below.
5140 Steel Grade Equivalent Chart
| Country | China | USA | Germany/UK/France | ISO | Japan |
|---|---|---|---|---|---|
| Standard | GB/T 3077-1999 | ASTM A29/A29M-05 | EN 10083/3-2006 | ISO 683/1:1987 | JIS G4053-2008 |
| Grades | 40Cr (A20402) 40CrA (A20403) 40CrE (A20406) |
5140 | 41Cr4 (1.7035) | 41Cr4 | SCr440 |
5140 Steel Round Bar Chemical Composition
| Stand | Grade | C (%) | Mn (%) | P (%) | S (%) | Si (%) | Cr (%) | Ni (%) | Mo (%) | Cu (%) |
|---|---|---|---|---|---|---|---|---|---|---|
| GB/T 3077-1999 | 40Cr (A20402) | 0.37-0.44 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.17-0.37 | 0.80-1.10 | ≤0.30 | ≤0.15 | ≤0.30 |
| GB/T 3077-1999 | 40CrA (A20403) | 0.37-0.44 | 0.50-0.80 | ≤0.025 | ≤0.025 | 0.17-0.37 | 0.80-1.10 | ≤0.30 | ≤0.10 | ≤0.25 |
| GB/T 3077-1999 | 40CrE (A20406) | 0.37-0.44 | 0.50-0.80 | ≤0.025 | ≤0.015 | 0.17-0.37 | 0.80-1.10 | ≤0.30 | ≤0.10 | ≤0.25 |
| ASTM A29/A29M-05 | 5140 | 0.38-0.43 | 0.70-0.90 | ≤0.035 | ≤0.040 | 0.15-0.35 | 0.70-0.90 | – | – | – |
| EN 10083/3-2006 | 41Cr4 (1.7035) | 0.38-0.45 | 0.60-0.90 | ≤0.025 | ≤0.035 | ≤0.40 | 0.90-1.20 | – | – | – |
| ISO 683/1:1987 | 41Cr4 | 0.38-0.45 | 0.60-0.90 | ≤0.035 | ≤0.035 | 0.10-0.40 | 0.90-1.20 | – | – | – |
| JIS G4053-2008 | SCr440 | 0.38-0.43 | 0.60-0.90 | ≤0.030 | ≤0.030 | 0.15-0.35 | 0.90-1.20 | ≤0.25 | – | – |
1.7035 Steel Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm³ | 0.284 lb/in³ |
5140 Steel Mechanical Properties
| Mechanical Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | ＞980 MPa | 142140 psi |
| Yield strength | ＞785 MPa | 113855 psi |
| Elongation at break | ＞9% | ＞9% |
| Reduction of area | ＞45% | ＞45% |
| Hardness | ≤207HB | ≤207HB |
5140 Steel Application
After hardening and tempering, it can be used to make the fittings for machines with high medium load and speed of work. Such as the automobile knuckle, gear wheel and axis of the machine tools. If it had been quenching and tempering with medium temperature, it will be a great choice for fittings with high load, low impact and good wearing resistance. Such as the gear wheel, lantern ring and etc. And after quenching and low-temperature tempering, the properties will be better than the last one. People usually use it to make the parts with good wearing resistance and handle high load, low impact. And you can see the principal axis, mechanical bolt and etc are made of it.
5140 Steel Sheet Plate Round Bar Heat Treatment
The ways of heat treatment for 1.7035 steel are normalizing, annealing, quenching, tempering and etc.
- Quenching it at the temperature of 850℃ and oil cooling.
- Tempering at the temperature of 520℃, then water-cooling and oil cooling.
After quenching, the surface hardness of it is 52-60HRC.
Nitrogen Treatment
5140 steel can nitriding, and the elements of it are good for nitriding. After nitriding, it can get higher surface hardness. And after nitriding, hardening and tempering, the max hardness can up to 72-78HRA. And the hardness of core will be 43-55HRC.
Nitrogen Process
1.Forging
2.Annealing
3.Rough machining
4.Hardening and tempering
5.Finish machining
6.Stress relieving
7.Rough grinding
8.Nitriding
9.Lapping
We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements.
Test
How is ASTM 5140 steel tested?
AISI 5140 Steel Chemical Composition Testing-Spectrometer
We are sae 5140 Alloy Structural Steel for composition testing using spectrometer.The spectrometer one-time excitation of the sample to analyze its composition method is widely accepted by the public at this stage.Compared with traditional analytical methods, the advantages of spectrometers for the detection of modern steel components are fast, accurate and efficient. This method can directly inject solid samples without chemical digestion, which can reduce the human error caused by the digestion process and the constant volume process; to good quality steel.
We ensure the quality of each piece of steel and strictly control the quality inspection. We have focused on the production of 5140 steel for more than ten years. We are a professional, experienced and powerful steel supplier. Please do not hesitate, we will give you satisfactory service and quality.
