GB 30CrMo/DIN 25crmo4, 1.7218 Alloy Structural Steel Round Bars

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Application: Structural Steel Bar
• Surface Treatment: Black, Rough Machined, Turned
• Alloy: Alloy
• Special Use: Gear, Wheels, Boiler, Pressure Vessel Steel
• Model NO.: DIN 25CrMo4, 1.7218 GB 30CrMo, SAE4130
• Product Name: DIN 25crmo4, 1.7218 Alloy Structural Steel Bar
• Material Number: 1.7218
• GB: 30CrMo
• ASTM: SAE 4130
• Delivery Condition: Quenched and Tempered
• Delivery Term: Fob, CIF, CFR, Exwork, etc
• Shipping: by Sea, Air
• Hardness: Max 229hb
• Hot Rolled Round Bar: Dia.10-300mm, Length.3000-10000mm
• Forged Round Bar: Dia.80-1000mm, Length.3000-10000mm
• Transport Package: Seaworthy Packing
• Specification: Dia. 10-1, 000mm, length: 3000-10000mm
• Trademark: BOZHONG or customized
• Origin: China
• HS Code: 7228600000
• Production Capacity: 5000 Tons/Month

Product Description

GB 30CrMo/DIN 25CrMo4, 1.7218  Alloy structural Steel Round Bars

Grade :	25CrMo4
Number:	1.7218
Classification:	Alloy Structural steel
Standard:	EN 10083-3: 2006 Steels for quenching and tempering. Technical delivery conditions for alloy steels     EN 10132-3: 2000 Cold rolled narrow steel strip for heat treatment. Technical delivery conditions. Steels for quenching and tempering     EN 10216-2: 2014 Seamless steel tubes for pressure purposes. Technical delivery conditions. Non-alloy and alloy steel tubes with specified elevated temperature properties     EN 10305-1: 2010 Steel tubes for precision applications. Seamless cold drawn tubes. Technical delivery conditions     EN 10269: 1999 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties     EN 10263-4: 2001 Steel rod, bars and wire for cold heading and cold extrusion. Technical delivery conditions for steels for quenching and tempering     EN 10250-3: 2000 Open steel die forgings for general engineering purposes. Alloy special steels     EN 10297-1: 2003 Seamless circular steel tubes for mechanical and general engineering purposes. Non-alloy and alloy steel tubes. Technical delivery conditions

 
Chemical composition %   of grade   25CrMo4 (1.7218):   EN 10083-3-2006

C	Si	Mn	P	S	Cr	Mo
0.22 - 0.29	max   0.4	0.6 - 0.9	max   0.025	max   0.035	0.9 - 1.2	0.15 - 0.3

Size of 25CrMo4
- As Forged
Round bar
Size: Dia.80-1,000mm
Length: 3,000-10,000mm
Square bar
Size: 150×150-600×600mm
Length: 3,000-8,000mm
(Forged Flat Bars, Shafts, Rollers and Blocks can be Customized)
- As Rolled
Round Bar
Size: Dia.10-300mm
Length: 3,000-10,000mm(can be Customized)
Surface Condition of 1.7218 Steel
Black, Rough Machined, Turned
Hardness of 25CrMo4 Steel
Annealed (+A): max 229HB
Treated to improve shearability (+S): max 255HB
Mechanical Properties of 1.7218 / 25CrMo4
Tensile strength:  930MPa
Yield point:  785MPa
Percentage reduction of area after fracture: 50%
Elongation after fracture: 12%
Impact test (+20°C): Transverse - 27~32J; Longitud - 45~50J
Quenched and Tempered (+QT) of W-Nr 1.7218 Steel
1. Heat din 1.7218 steel slowly to 880°C;
2. Soak at this temperature then quench in oil;
3. Temper as soon as 25CrMo4 steel reach room temperature;
4. Heat uniformly to the suitable temperature of 540°C;
5. Withdraw the material from the furnace and cool in the air.
Equivalent grades of grade   25CrMo4 (1.7218)
Warning! Only for reference

USA -	Germany DIN,WNr	Japan JIS	France AFNOR	England BS	Italy UNI	China GB	Sweden SS	Czechia CSN	Finland SFS	Russia GOST	Inter ISO
SAE4130	25CrMo4	SCM420 SCM430	25CD4	708A25 708M25 CFS10	25CrMo4	30CrMo	2225	15130	25CrMo4	20KHM 30KHM 30KHMA	25CrMo4

Material Photo:

Applications of DIN 25CrMo4 Steel
1.7225 steel is used for fasteners in the boiler and steam turbine which the working temperature is below 450°C. The 25CrMo4 steel is also good for high pressure with nut and flange,general mechanical loading of shafts,gears,bolts,studs,wheels.
 Quality Assurance
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT; 
(5) eddy current flaw detection-ET

Company information:

Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, military, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
 

1. steel coil
2. steel plate
3. steel sheet
4. steel bar/rod

    steel round bar
    steel flat bar
    steel square bar

1. steel pipe/tube ( welded or seamless )

    steel round pipes 
    steel square pipes
    steel welded tubes
    steel seamless tubes

1. steel strip
2. steel beam
3. steel angle
4. steel channel
5. steel flange
6. Steel wire

 
 
Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
 
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
 
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
 
Special steel includes as below:
Boiler and pressure vessel steel
Pipeline steel
Bridge steel
Nuclear power steel
Structural steel
Die steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel
 


FAQ: 
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price. 
 
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
 
Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
 
Q: What is the payment term?
A: T/T or L/C.
 
Q: Can you provide a sample for our testing before confirm the order?
A: Yes. We can provide sample to you for approval before you place an order to us. Free sample is available if we have stock.
 
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come. 
 Customer visiting :
 
Warmly welcome! Pick up your phone and Call us!
Send us the inquiry here!
We will reply you at the first time.

Contact US:
Annie Wang 
Direct Line:+86 - 21 - 5762 9195