China Categories
All Categories
Alloy Tool Steel Round Machined Bars 5140 40cr Scr440 Hot Rolled 5140
Ask Latest Price
Brand Name:MITTEL TISCO BAO STEEL
Model Number:5140 40cr Scr440
Certification:SGS ISO MTC
Price:0.5 USD/KG
Payment Terms:L/C, T/T
Supply Ability:50000KGS
Delivery Time:7 Days
Company Data
Verified Supplier
Contact Person
Gao Ben
Business Type:
Manufacturer Distributor/Wholesaler Agent Exporter Seller
Officials:
NO.288,YOUYI ROAD ,XI SHAN DISTRICT,WUXI CITY,CHINA
Quality:
Quality Certifitation Available
Visit Website
Product Details
Company Profile
Product Details
Machined Bars 5140 40cr Scr440 Hot Rolled 5140 Alloy Tool Steel Round Bar
40Cr steel material widely be used in the machine-building industry. 40Cr is a standard grade of GB. After quenching and tempering, it will get great comprehensive mechanical property and great low-temperature impact toughness. And its hardenability is good. After the oil quenching, the fatigue limit will be higher. But the fittings with complex shape is easy to get crack after the water quenching. It is also suitable for cyaniding and high-frequency quenching beside Q+T. Its machinability also is good, if the hardness is 174-229 HB, the machinability is 60%. 40Cr steel material is a good choice for medium type plastic mold. It belongs to mild Q+T steel and cold heading mold steel. Also, the price is not high, easy to be processed. After the right heat treatment, it will get good toughness, plasticity and wear resistance. Tempering at the range of 550-570℃, it will get the best mechanical property. The equivalent steel grade of 40Cr is 40MnB, 45 MnB, 35SiMn, 42SiMn, 40MnVB, 42MnV, 40MnMoB, 40MnWB and etc.
40Cr Steel Material Chemical Composition
| Grade | C(%) | Si(%) | Mn(%) | Cr(%) | P(%) | S(%) | Cu(%) | Ni(%) | Mo |
|---|---|---|---|---|---|---|---|---|---|
| 40Cr | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.80-1.10 | MAX 0.035 | MAX 0.035 | MAX 0.30 | MAX 0.30 | MAX 0.15 |
40Cr Mechanical Properties
- Tensile Strength: ≥ 810 MPa
- Yield Point: ≥ 785 MPa
- Impact Absorbing Energy: ≥ 47 J
What is 40Cr Steel Material Used for?
It is one of the most popular steel grades in the industry. After Q+T heat treatment, it usually is used to make parts. Such as the gears of machine tools, shaft, worm, spline shaft and etc. If it is through quenching and tempering; high-frequency quenching, it will be good choice for fittings with high hardness and wear resistance. For example, wheel gear, shaft, principal axis, crankshaft, arbor, inlet valve, bolt and etc.
Q+T Hardness
After quenching and tempering, the hardness of 40Cr is in the range of 32-36HRC, which means about 301-340 HB.
- 830℃-860℃ oil quenching: 55HRC
- 150℃ tempering: 55HRC
- 200℃ tempering: 53HRC
- 300℃ tempering: 51HRC
- 400℃ tempering: 43HRC
- 500℃ tempering: 34HRC
- 550℃ tempering: 32HRC
- 600℃ tempering: 28HRC
- 650℃ tempering: 24HRC
- 700℃ tempering: 20HRC
40Cr Steel vs 45# Steel
The carbon content of 40Cr is lower than 45# steel. At the condition of hot-rolled, their mechanical property is almost the same. But the price of 40Cr is higher than 45# steel about a half. So if your budget is not high, you maybe need to choose the 45# steel.
Company Profile
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Jiangsu Mittel Steel Industrial Limited is located in Wuxi City, a beautiful city near Shanghai. Wuxi is close to Shanghai (BAO STEEL) ,Zhangjiagang (ZPSS),Ningbo (BAO XIN),KUN SHAN (DKSS), enjoy excellent geographic location and convenient water, land and air transportation. , Wuxi become the biggest stainless steel sheet ,plate and coil supply Centers in China. Jiangsu Mittel Steel Industrial Limited was established in 1998 years. as one of the largest stockists and manufacturers of industrial grade Stainless Steel products and derivatives in Wuxi ,We keep a stock of 50000 tons every month, so we can delivery goods in fast time.
Our company supplies cold/hot-rolled stainless steel
sheets,stainless steel coils and stainless steel Plate to many
steel factories from athome and abroad, including Shanxi Taigang
Iron& Steel CO, . Ltd (TISCO)Zhangjiagang Pohang (ZPSS),
Shanghai BAO STEEL, Ningbo Baoxin and steel factories in Taiwan
area, Mainland Chinese and foreign countries and regions.
Our long-term business lines are
201.202.304(1.4301).304L.316.316L(1.4404).430.409L, 309S
,310S(1.4845).317L.904L.S31803(1.4462).S32750.S32760, Finish: 2B,
BA, NO. 1 NO. 4, HL, 8K and so on...Meanwhile, our company is also
engaged in the long-term supply of homemade & imported medium
and thick plates, galvanized and carbon steel products.
Adhering to the principle of "quality first and customer
foremost",our company will offer long-term service to nationwide
manufacturers of household appliances, elevators, tableware,
ornaments, tanks and machines. We can offer precise frosted
wiredrawing, 8K mirror finishing and skim board oil-abrasion of
various specifications at any time. The precisely-processed
products will meet your requirements for high quality. Our company
is a modern enterprise integrating distribution and storage.
If you are interested in any of our products or would like to
discuss a custom order, please feel free to contact us. We are
looking forward to forming successful business relationships with
new clients around the world in the near future.
Send your message to this supplier
You May Like
A105 Forged Solid Steel Round Bar OD 130MM ASME A105 Boiler
Alloy AISI SAE 8620 Steel | 1.6523 | 21NiCrMo2 | SNCM220 Round Bar
38CrMoAl Alloy Structure Steel Round Bar DIN 1.8509 41CrAlMo7-10 Forged Rod 650mm
Monel 400 Annealing Alloy Steel Round Bar Cold Rolled Round Rods
Black Hot Rolled and Forged Alloy Steel Round Bar DIN 1.6580 30CrNiMo8 20-420mm Dia
Alloy Steel Round Bar Rod DIN 18CrNiMo7-6 1.6587 Solution Annealing Q+T
18CrNiMo7-6 (1.6587) / 17CrNiMo6 / Forged Rough Turned Heat Treatment and Machined Alloy Steel Forged Shaft
Vcn200 DIN No 1.6580 AISI4340 30CrNiMo8 80mm Q+T Hot Rolled Alloy Steel Round Bar
Bearing Steel Round Bar Din 16mncr5 Din En 10278 Bright
SAE 4340 Dia 300mm Length 3000mm DIN 1013 DIN 1.6565 / 40CrNiMo 6 QT Solid Bar
Hot Rolled Round Bar 40cr JIS SCr440 DIN 1.7035 Alloy Structure Steel Forged Steel Soild Bar
Inquiry Cart
0