Alloy Engineering Steel Bar GB40RH Quenching and Tempering Delivery
Condition
Product Introduction
AISI 5140 steel also can be called JIS Scr440 and DIN 1.7035 steel.
It is one of the alloy steel. And it is one of the most popular
steel grades in the productions of the machine. The 5140 steel
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 heat treatment as below.
Standard steel GB in China is 40Cr, the German DIN standard
material No. 1.17035/1.7045, German standard DIN grade 41Cr4/42Gr4,
EN grade 18 British standard, the British standard BS steel 41Cr4,
France AFNOR 42C4 France NF steel standard, standard grade of steel
38Cr4/41Cr4, Italy UNI 41Cr4 Belgium NBN steel standard, standard
grade of steel 42Cr4, Sweden SS standard grade 2245. The American
AISI/SAE/ASTM standard grade 5140, the Japanese JIS standard grade
SCr440 (H) /SCr440, the international organization for
standardization ISO standard steel 41Cr4.
Features
1. Belong to the ultra-high strength steel
2. High strength and toughness
3. Good hardenability
Similar Standards
| Chinese | American | German | Japanese | British |
| GB | AISI | DIN | JIS | BS |
| 42CrMo | SAE4140 | 1.7225 | SCM440 | EN19 |
Chemical Composition
| Grades | C | Si | Mn | P | S | Cr | Mo | Cu | Ni |
| 4140 | 0.38-0.45 | 0.17-0.37 | 0.5-0.8 | ≤0.035 | ≤0.035 | 0.9-1.2 | 0.15-0.25 | ≤0.3 | ≤0.035 |
| 42CrMo | 0.38-0.45 | 0.17-0.35 | 0.5-0.8 | ≤0.035 | ≤0.035 | 0.9-1.2 | 0.15-0.25 | ≤0.03 | ≤0.03 |
| 440 | 0.38-0.43 | 0.15-0.35 | 0.6-0.85 | ≤0.03 | ≤0.03 | 0.9-1.2 | 0.15-0.3 | ≤0.3 | ≤0.25 |
Heat Treatment
| Quenching | Tempering |
| Heating Temperature/℃ | Cooling | Hardness/HRC | Heating Temperature/℃ | Cooling | Hardness/HRC |
| 820-840 | Oil | ≥53 | 450-650 | Air | 25-40 |
General Applications
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.
Stock Size
| Plate | Thickness | 20-120mm |
| Width | 2200mm |
| Length | 4000-10000mm |
| round bar | Diameter | 16-450mm |
| Length | 4000-10000mm |
Sizes and Conditions
Our steel materials are in different sizes and conditions specially
catered to our customers' needs. They come in round bars, flat
bars, plates and block.
The conditions of the materials vary from pre-hardened, hot
rolled,annealed, quenched and tempered to surface conditions such
as black, pre-machined,griding and polish.
Why choose us?
Quality Assurance from government owned steel mills
At die & tool steel , we meticulously source materials only from
steel manufacturers to ensure consistency in providing the finest
quality steel products for our customers.
Being in the competitive market today, we clearly understand that
customers are looking for products that are not only best in class
but also affordably priced. We are confident that we are able to
ful fil these two equally vital aspects –our customers' continuous
support over the past two decades is the most heartfelt recognition
to us.
Speedy and Timely Delivery
Knowing that delivering goods to customers' hands on time is as
important as providing quality goods, we treat every business
transaction as a priority. Be it a raw material or a finished
material with machining or heat treatment, every effort will be
made to get your purchase order to you in the shortest lead time.
Quality Commitment
In order to realise competitive products to fulfil our customers'
demands and quality considerations, our integrated quality and work
management system is continuously being improved and developed
further. We document this for our customers by having our quality
management system certified in accordance with ISO 9001. This
measure is accompanied by audits and recertification's on a
regularly prescribed basis.
Our service
We provide quality special steel for all industries.
Orders of any size, any length, ship fast
We carry a unique inventory of specialty special steel
Provide related value-adding services :
metal cutting, sizing, machining (blanking, milling, grinding), and
heat treatment.
Sawing for small or large quantities, sawing-to-size.
Excellent customer service
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