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AISI 4140 Steel 1.7225 42CrMo4 SCM440
Classification :
Product
Product introduction
AISI 4140 Alloy Steel is a common chromium-molybdenum steel that usually used after quenched and tempered, with high intensity, high hardenability. The alloy 4140 plate also has high fatigue strength and good low-temperature impact toughness.
has great advantage on 4140 steel plate:
- 1500+ tons daily stock of 4140 alloy plate or flat bar.
- Hot rolled / annealed / Q+T (PH prehardened) condition available.
- Thickness 4-300mm available for 1-3 days shipment.
- Thickness 1-10mm cold rolled sheet for 30 days lead time.
- Cut to width & cut to length service available.
- Machined to tolerance & roughness pieces service available.
Technical data
4140 Grade Designation
When discussing AISI 4140, it is important to understand what the grade number means:
| Number | Meaning |
| 4 | Designates that 4140 steel is molybdenum steel, indicating that it possesses higher amounts of molybdenum than other steels, such as the 1xxx series. |
| 1 | Designates that 4140 steel has additions of chromium as well; more so than 46xx steel for example. |
| 40 | Used to differentiate 4140 Steel from other steels in the 41xx series. |
How is 4140 Steel Made?
AISI 4140 is made by placing iron, carbon, and other alloying elements into an electric furnace or oxygen furnace. The major alloying elements added to AISI 4140 are:
- Chromium
- Manganese
- Molybdenum
Once the iron, carbon, and other alloying elements have been mixed together in liquid form, it is allowed to cool. The steel may then be annealed; possibly several times.
After the annealing is complete, the steel is heated to a molten phase again so that it can be poured into the desired form and can either be hot worked or cold worked through rollers or other tools to reach the desired thickness. Of course, there are other special operations that can be added to this to reduce mill scale or improve mechanical properties.
Mechanical Properties of 4140 Steel
AISI 4140 is a low alloy steel. Low alloy steels rely on elements other than just iron and carbon to enhance their mechanical properties. In AISI 4140, additions of chromium, molybdenum, and manganese are used to increase the strength and hardenability of the steel. The additions of chromium and molybdenum are why AISI 4140 is considered a “chromoly” steel.
There are several important mechanical properties of AISI 4140, including:
- Tensile Strength: AISI 4140 steel typically has a target ultimate tensile strength of around 95,000 psi.
- Toughness
- Ductility
- Hardenability
Chemical Properties
The table below highlights the chemical composition of AISI 4140:
| C | Cr | Mn | Si | Mo | S | P | Fe |
| 0.38-.43% | 0.80-1.10% | 0.75-1.0% | 0.15-0.30% | 0.15-0.25% | 0.040% max | 0.035% max | Balance |
The addition of chromium and molybdenum promotes corrosion resistance. The molybdenum can be particularly useful when trying to resist corrosion due to chlorides. The manganese in AISI 4140 is used to increase hardenability and as a deoxidizer. In alloy steels, manganese can also combine with sulfur to improve machinability and make the carburizing process more effective.
Storage video
Warehouse storage
The group company and factory cover an area of more than 800 mu, with more than 1,500 employees, and its business covers more than 20 countries and regions around the world. Xinghan Group is committed to developing new types of steel products and building a first-class coated sheet and steel manufacturing enterprise with international competitiveness. Xinghan Group hopes to grow into a widely respected and sustainable global resource-based enterprise through continuous pursuit of excellence, create better social, economic and environmental benefits, and bring more competitive value returns to employees and customers.
Packing and delivery
The company has major production lines such as pickling, cold rolling, hot dip galvanizing, hot dip galvanizing, thick plate galvanizing and color coating, forming an annual production capacity of 1 million tons of pickling coil, 1 million tons of cold rolled sheet and 900,000 tons of hot dip galvanized sheet. Galvanized and hot-dip galvanized aluminum zinc silicon steel sheet scale 450,000 tons thick galvanized steel plate scale 300,000 tons color coated steel plate scale is one of the largest steel and non-ferrous metal smelting and processing suppliers in Shandong Province.
Customer visit
The company adheres to the development strategy of "seeking development by science and technology, seeking efficiency by management", adheres to the core values of "people-oriented, integrity, responsibility and excellence", adheres to the development system of "green products and green industry", "promotes high-quality beyond development in an all-round way", and realizes the vision of "building a first-class aluminum processing service enterprise with international competitiveness".
Application field
The main supply fields are: aerospace, national defense equipment, military weapons, chemical industry, shipbuilding, nuclear energy, trains, containers, environmental protection, precision machining, auto parts, machinery, electronic products, molds, medical treatment Equipment, construction, decoration, etc.
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FAQ
Q:How long is your delivery time?
A:Within 5 days for stock size, 15-30 days for customized size.
Q:How can I get an accurate quote?
A:Please provide the information of prodcuts standard, material, size and quantity.
Q:When can I get your reply after the inquiry.
A:Within 15 minutes during working time, whthin 12 hours during non-working time.
Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness,coating and the number of tons you need to purchase.
Q:Can you provide sample ?
A: We can provide the samll samples in stock for free, as long as you contact us. Customized samples will take about 5-7days.
Q:How many coutries you already exported ?
A: Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt, Turkey, Jordan,India, etc.
Q: Can we visit your factory?
A: Sure, we welcome you to visit our factory , check our production lines and know more about our strength and quality.
Q:Can you send samples?
A:Of course, we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs.
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Tel : +8615562508601
Email : cnxh001@xhsteelgroup.com
WhatsApp：+8615562508601
Address : 166 Xingfu Town, Boxing County, Binzhou City, Shandong Province, China
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