25CrMo4 1.7218 Forged Round Bar Alloy Steel 25CrMoS4 GL ABS LR
25CrMo4 1.7218 forged round bar alloy steel 25CrMoS4 steel Manufacturer
25CrMo4 belongs to alloy structural steel, and also belongs to quenched and tempered steel in special steel.It is distinguishing for its good matching of high strength and high toughness through certain heat treatment.
25CrMo4 Steel has excellent hardenability and tempering properties by adding proper Cr, Mo and other alloy elements.Through suitable tempering treatment,it maintains high strength and high toughness,as well as high temperature resistance,wear-resistant properties. 25CrMo4 Steel is suitable for the parts which serve in a complex environment.
Forged Round Bar 25CrMo4 1.7218 Product features
| Material | 25CrMo4 1.7218 |
| Type | Forged bar ,round ,square, flat, block, shaft etc. |
| Diameter | φ150-1500mm |
| Length | Max 10000mm (10m) |
| Surface | Black, peeled, polishing, bright, sand blast, hair line, etc. |
| Application |
Mechanical engineering industry of automotive parts,oilfield equipment. |
| Tensile strength test | DIN EN ISO 6892-1 |
| Impact test | DIN EN ISO 148-1 |
| UT | DIN EN10228 Quality-Class 3 C/c or D/d |
| Grain size | ASTM E112 / EN ISO 643 |
| Applicable standard | EN10250,EN10083,SEW550 etc |
| Certificate | EN 10204 / 3.1 3.2 |
Forged Round Bar 25CrMo4 1.7218 Chemical Compostion
| Standard | Steel designation name | Number | C | Si | Mn | P | S | Cr | Mo | Ni |
| EN10250 | 25CrMo4 | 1.7218 | 0.22-0.29 | ≤0.40 | 0.60-0.90 | ≤0.035 | ≤0.035 | 0.90-1.20 | 0.15-0.30 | - |
Forged Round Bar 25CrMo4 1.7218 Mechanical properties
| Mechanical properties in the quenched and tempered condition (continued) Thickness of ruling section tR |
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| Steel designation |
tR≤160mm | 160＜tR≤330mm | 330＜tR≤660mm2) | |||||||||||||||
| Standard | Name | Number | Remin N/mm² |
Rmmin N/mm² |
A min % |
KV min J |
Remin N/mm² |
Rmmin N/mm² |
A min % |
KV min J |
Remin N/mm² |
Rmmin N/mm² |
A min % |
KV min J |
||||
| 1 1) | tr 1) | 1 1) | tr 1) | 1 1) | tr 1) | 1 1) | tr 1) | |||||||||||
| EN10250 | 25CrMo4 | 1.7218 | 450 | 700 | 15 | 50 | 400 | 650 | 17 | 13 | 45 | 27 | 380 | 600 | 18 | 14 | 38 | 22 |
Forged Round Bar 25CrMo4 1.7218 Comparison of steel grades
| EN | Number | ISO 683-1:1987 | Germany | United Kingdom | France | Italy | Sweden | Spain |
| 25CrMo4 | 1.7218 | 25CrMo4 | 25CrMo4 | (708M25) | 25 CD 4 | (25CrMo4) | 2225 | - |
Forged Round Bar 25CrMo4 1.7218 Heat treatment
- Normalizing: 850 – 880°C,Cooling in air
- Soft Annealing:680 – 720°C,Cooling in furnace
- Stress relieve:450-650°C,Cooling in air
- Hardening:820 – 880°C,oil or water quench
- Quenching: 820– 860°C
- Tempering:540 – 680°C,Cooling in air
About Guangda For forged round bar
- Directly manufactuer -- One stop for quality forged round bars
- Sold more than 100k tons for the round bars per year for overseas market.
- Register the exclusive trademark of GD in Europe.
- Experience for more than 10 years with quick delivery time and fast service.
- Listed company. Strong scientific research ability , Strength for Market experience and customer service .
- Certificate PED,DNV, BV, Rina, ISO, GL, ABS, LR etc.
25CrMo4 QT
1.7218
25CrMo4 material
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