34CrMo4 1.7220 Alloy Steel Round Bar - 0.30-0.37% Carbon, 1000-1200 MPa Tensile Strength
Price:
845 USD/Ton
MOQ:
500KGS
Delivery Time:
7 days
Brand:
MITTEL
Product Description
34CrMo4 (1.7220) Alloy Steel Round Bar Overview
34CrMo4 (1.7220) is a high-quality alloy special steel designed for quenching and tempering applications, offering excellent mechanical properties for demanding industrial use.
Technical Specifications
Grade Classification
| Grade | 34CrMo4 |
|---|---|
| Number | 1.7220 |
| Classification | Alloy special steel |
Applicable Standards
- EN 10083-3:2006 - Steels for quenching and tempering
- EN 10132-3:2000 - Cold rolled narrow steel strip for heat treatment
- EN 10263-4:2001 - Steel rod, bars and wire for cold heading and cold extrusion
- EN 10250-3:2000 - Open steel die forgings for general engineering purposes
- EN 10297-1:2003 - Seamless circular steel tubes for mechanical engineering
Chemical Composition
| Element | Content (%) |
|---|---|
| C (Carbon) | 0.30 - 0.37 |
| Si (Silicon) | max 0.40 |
| Mn (Manganese) | 0.60 - 0.90 |
| P (Phosphorus) | max 0.025 |
| S (Sulfur) | max 0.035 |
| Cr (Chromium) | 0.90 - 1.20 |
| Mo (Molybdenum) | 0.15 - 0.30 |
Mechanical Properties
Tensile Strength (Rm)
| Diameter/Thickness (mm) | Strength Range (MPa) | Condition |
|---|---|---|
| ≤ 16 | 1000-1200 | +QT |
| 16 - 40 | 900-1100 | +QT |
| 40 - 100 | 800-950 | +QT |
| 100 - 160 | 750-900 | +QT |
| 160 - 250 | 700-850 | +QT |
| 0.3 - 3 | 600 | +A |
Yield Strength (Re/Rp0.2)
| Diameter/Thickness (mm) | Strength (MPa) | Condition |
|---|---|---|
| ≤ 16 | 800 | +QT |
| 16 - 40 | 650 | +QT |
| 40 - 100 | 550 | +QT |
| 100 - 160 | 450-500 | +QT |
| 160 - 330 | 410-450 | +QT |
| 0.3 - 3 | 460 | +A |
Impact Energy & Elongation
| Property | Value | Condition |
|---|---|---|
| Impact Energy (Longitudinal) | 35-45 J | +QT, +20°C |
| Impact Energy (Transverse) | 25-27 J | +QT, +20°C |
| Elongation (Transverse) | 10-12% | +QT |
| Reduction in Cross Section | 45-60% | +QT |
Hardness Properties
| Type | Value | Condition |
|---|---|---|
| Brinell Hardness (HBW) | 255 | +S |
| Brinell Hardness (HBW) | 223 | +A |
| Vickers Hardness (HV) | 185 | +A |
| Vickers Hardness (HV) | 315-465 | +QT |
Material Properties
- Weldability: Low weldability - requires special precautions during welding
- Hardenability: Medium carbon content with poor hardenability
- Characteristics: Sensitive to notching and quenching cracks
Product Images
International Equivalent Grades
Note: Equivalent grades are provided for reference purposes only
| Region | Equivalent Grades |
|---|---|
| USA | 4135 |
| Germany (DIN, WNr) | 34CrMo4 |
| Japan (JIS) | SCM435H |
| France (AFNOR) | 34CD4, 35CD4 |
| England (BS) | 708A30, 708M32 |
| Italy (UNI) | 35CrMo4 |
| China (GB) | 35CrMo, ZG35CrMo |
| Sweden (SS) | 2234 |
| Finland (SFS) | 25CrMo4 |
| Russia (GOST) | 35KHM, 35KHML |
| International (ISO) | 34CrMo4 |
For detailed chemical composition analysis and additional technical data, please visit our steel composition database.
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Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
NO.288,YOUYI ROAD ,XI SHAN DISTRICT,WUXI CITY,CHINA
Contact Person
Gao Ben