| After-sales Service: | We Provide After-Sales Service |
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| Warranty: | 2 Years |
| Type: | Steel Plate |
| Standard: | ASTM, AISI, GB, JIS, DIN, BS |
| Certification: | ISO, RoHS, IBR |
| Surface Treatment: | Blackface |
| Samples: |
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| Customization: |
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| Product introduction | ||||||||||||||||
| 25CrMo steel is an alloy steel for construction machinery structure in China. | ||||||||||||||||
| Properties of 25CrMo alloy steel: | 1. High hardenability, no temper brittleness, 2. The weldability is quite good, and the tendency of cold cracking is very small. 3. Good machinability and cold strain plasticity. Generally used in quenching and tempering or carburizing quenching state, |
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| 25CrMo alloy steel uses: | 25CrMo4 alloy steel is used to manufacture high-pressure pipes, various fasteners and advanced carburized parts, such as gears and shafts, which work in non-corrosive medium and medium containing nitrogen-hydrogen mixture with working temperature lower than 250 C.. | |||||||||||||||
| technical parameter | ||||||||||||||||
| typical | 25CrMo alloy steel | |||||||||||||||
| GB standard | GB /T 3077-2015 | |||||||||||||||
| Germany | DIN EN/DIN-25CrMo4 | |||||||||||||||
| European standard | EN-25CrMo4 | |||||||||||||||
| France | NF EN/NF-25CD4 | |||||||||||||||
| Typical product | Gear, shaft | |||||||||||||||
| Content of chemical elements (%) | ||||||||||||||||
| ingredient | C | Si | Mn | P | S | Cr | Ni | Cu | Mo | |||||||
| minimum value | 0.22 | 0.17 | 0.6 | - | - | 0.9 | - | - | 0.15 | |||||||
| maximum | 0.29 | 0.37 | 0.9 | 0.03 | 0.03 | 1.2 | 0.3 | 0.3 | 0.3 | |||||||
| mechanical character | ||||||||||||||||
| Sample diameter d mm |
Heat treatment or condition | tensile strength σb Mpa |
yield limit σs Mpa |
Elongation after breaking or elongation δ % |
Section shrinkage ψ % |
hardness HBW |
Shock absorption energy KV2 J |
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| d=25 | Quenching and tempering | ≥900 | ≥600 | ≥14 | ≥55 | ≤229 | ≥70 | |||||||||
| comparison table | ||||||||||||||||
| China | Germany | France | European standard | Russia | Sweden | |||||||||||
| YB | ISC | DIN EN/DIN | W-Nr. | L-Nr. | NF EN/NF | EN | Digital grade | GOST | SS14 | |||||||
| 25CrMo | A30252 | 25CrMo4 | 1.7218 | 1.7214 | 25CD4 | 25CrMo4 | 1.7218 | 30ХМ | 2225 | |||||||
1. Who are we?
Our headquarters is located in Shandong, China. Since 2002, we have been selling to the domestic market (40.00%), Northern Europe (8.00%), North America (7.00%), the Middle East (7.00%), Africa (6.00%), South America (5.00%), Southeast Asia (5.00%), East Asia (5.00%), South Asia (5.00%), Eastern Europe (3.00%), Western Europe (3.00%), Central America (3.00%), Southern Europe (2.00%), and Oceania (1.00%). There are about 101-200 people in our office.
2. How do we guarantee quality?
Pre-production samples are always available before mass production;
Always carry out final inspection before shipment;
3. What can you buy from us?
Aluminum plate, aluminum coil, aluminum foil, carbon steel, alloy steel, stainless steel, copper galvanizing, etc
4. Why should you buy from us instead of other suppliers?
ZhongYe Metal Products (Shandong) Co., Ltd. is a leading manufacturer of aluminum products and carbon alloy materials in China, with more than 20 years of experience. More than 160 experienced workers use German brand processing equipment for production.
5. What services can we provide?
Accepted delivery conditions: FOB, CIF, FAS, DDP, express, DES;
Accepted payment currencies: US dollar, Australian dollar, Euro and RMB;
Payment types accepted: T/T, L/C, MoneyGram, credit card, PayPal, Western Union remittance, cash;
6. After-sales service: 24-hour online maintenance guidance service.
Language: English, Chinese Other.
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Audited Supplier 
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