Product Description
After quenching and high temperature tempering, quenched and tempered steel has high tensile strength and yield strength, and can obtain fine grain structure. Its comprehensive mechanical properties are better than 40Cr steel. However, when the quenching temperature is not enough, the hardenability is poor. The cold deformation plasticity and workability are medium, and the superheat sensitivity is small, but there is a tendency of temper brittleness and white spot sensitivity. It is generally used in the quenched and tempered state.
It is used to manufacture various important parts with variable load and high load, such as locomotive connecting rod, crankshaft, push rod, propeller, beam, shaft sleeve bracket, double-head stud, screw, non-carburized gear, various gears and pins after nitriding, high-pressure boiler water pump shaft (diameter less than 30mm), high-pressure cylinder, steel pipe and bolt (working temperature less than 420 ºC, 30MPa), etc.
When used as tool steel, the steel can be used to make high-end hand tools, hardware tools, etc.
| Grade | C | Si | Mn | Cr | Ni | Mo | P | S | Cu |
| ≤ | |||||||||
| 20Mn2 | 0.17-0.24 | 0.17-0.37 | 1.40-1.80 | ≤0.30 | ≤0.30 | ≤0.10 | 0.030 | 0.030 | 0.30 |
| SMn420 | 0.17-0.23 | 0.15-0.35 | 1.20-1.50 | ≤0.35 | ≤0.25 | 0.030 | 0.030 | 0.30 | |
| 1524 | 0.19-0.25 | 0.15-0.30 | 1.35-1.65 | - | - | 0.040 | 0.050 | 0.20 | |
| 22Mn6 | 0.18-0.25 | 0.10-0.40 | 1.30-1.65 | ≤0.40 | ≤0.40 | ≤0.10 | 0.025 | 0.035 | 0.30 |
| 18Mn5 1.0436 | 0.15-0.20 | ≤0.40 | 0.90-1.60 | ≤0.30 | ≤0.30 | ≤0.08 | 0.025 | 0.015 | 0.30 |
| 35Mn2 | 0.23-0.39 | 0.17-0.37 | 1.40-1.80 | ≤0.30 | ≤0.30 | ≤0.10 | 0.030 | 0.030 | 0.30 |
| SMn438 | 0.35-0.41 | 0.15-0.35 | 1.35-0.65 | ≤0.35 | ≤0.25 | - | 0.030 | 0.030 | 0.30 |
| 1335 | 0.33-0.38 | 0.15-0.35 | 1.60-1.90 | ≤0.20 | ≤0.25 | ≤0.06 | 0.035 | 0.040 | 0.35 |
| 36Mn6 | 0.33-0.40 | 0.10-0.40 | 1.30-1.65 | ≤0.40 | ≤0.40 | ≤0.10 | 0.025 | 0.035 | 0.30 |
| 40Mn2 | 0.37-0.44 | 0.17-0.37 | 1.40-1.80 | ≤0.30 | ≤0.30 | ≤0.10 | 0.030 | 0.030 | 0.30 |
| SMn443 | 0.40-0.46 | 0.15-0.35 | 1.35-1.65 | ≤0.35 | ≤0.25 | - | 0.030 | 0.030 | 0.30 |
| 1340 | 0.38-0.43 | 0.15-0.35 | 1.60-1.90 | ≤0.20 | ≤0.25 | ≤0.06 | 0.035 | 0.040 | 0.35 |
| 55SiMnMo/60Si2Mn/SUP6/ 1.0909/60Si7 | 0.52-0.6 | 0.9-0.9 | 1-1.3 | ≤0.35 | - | - | 0.04 | 0.04 | 0.2 |
| SUP10/1.8159/ 50CrV4/ 50CrVA | 0.47-0.55 | 0.15-0.35 | 0.65-0.95 | 0.8-1.1 | - | - | 0.03 | 0.03 | 0.3 |
| 40CrV/A23402/6140/42CrV6 | 0.37-0.44 | 0.17-0.37 | 0.5-0.8 | 0.8-1.1 | ≤0.3 | ≤0.15 | 0.035 | 0.035 | 0.3 |
| Material Science: | Hot rolled/cold drawn/forged steel round steel |
| Process: | It is forged from vacuum degassed steel ingot. |
| Diameter: | 25mm - 1000mm (optional) |
| Length: | 1000mm-12000mm Straightness:3mm/M max(optional) |
| Process: | EAF+LF+VD+forging+heat treatment (optional) |
| Delivery conditions: | Hot forging+rough machining (black surface after Q/T)+double tempering. |
| Delivery time | 15-25 days |
| Minimum order quantity: | 5 tons |
| Heat treatment: | Normalizing/annealing/quenching/tempering (optional) |
| Technical data: | Chemical composition, physical properties and mechanical tests according to customer requirements |
| characteristic: | According to your requirements |
| Test: | Ultrasonic test according to SEP 1921-84 C/c and D/d (optional) |
| Tag: | Grade, heat resistant NO The length will be printed with the required color on each bar |
| Payment: | T T 30% in advance; The balance shall be paid against shipping documents or irrevocable letter of credit at sight before shipment |
| Terms of trade | FOB,C&F,EXW... |
| Sample diameter d mm | Heat treatment or status | tensile strength σb Mpa | yield point σs Mpa | Elongation or elongation after fracture δ % | Reduction of area ψ % | hardness HBW | Impact absorbed energy KV2 J |
| d=25 | Quenching+tempering | ≥885 | ≥735 | ≥10 | ≥50 | ≤241 | ≥71 |
Packaging | 1. by bundles, each bundle weight under 3 tons, for small outer diameter steel bars, each bundle with 4 - 8 steel strips. 2. after making by bundle, covered with Polyethylene waterproof cloth. 3. make black paints painting on each bar, then make bundles |
| 20 feet container contains dimension | Length under 6000mm |
| 40 feet container contains dimension | Length under 12000mm |
| By bulk vessel | Freight charge is low by bulk cargo, and large heavy sizes can not be loaded into containers can shipping by bulk cargo |
1. Who are we?
Our headquarter is located in Shandong, China. Since 2023, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.
2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;
3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.
5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese
6. How can we get your price?
A. We need the following information to quote for you:
1). Product Name
2). standard
3). Material grade (chemical composition)
4). dimension
5). amount
6). Special part drawing