quenching and tempering high strength 34CrNiMo6 Alloy Structure Steel Round Bars
34CrNiMo6 Alloy Steel/1.6582 steel
Description
34CrNiMo6 Alloy Steel is a quenching and tempering steel with high strength, high toughness, and good hardenability. A heat treatable, low alloy steel containing nickel, chromium, and molybdenum as per DIN Germany standard. 34CrNiMo6/1.6582 Alloy Steel is widely used in heavy-duty Shafts, Gears, Axles, Spindles, Couplings, Pins, etc.
The 34CrNiMo6 Alloy Steel can be induction hardened and it is weldable under certain conditions. Through hardenability to appr. 100 mm diameter bar with oil quenching.
34CrNiMo6 Alloy Steel Chemical composition
| National Standard | Grade | C% | Si% | Mn% | Cr% | Mo% | Ni% | P% | S% |
| DIN | 34CrNiMo6 | 0.30-0.38 | ≤0.4 | 0.5-0.8 | 0.9-1.2 | 0.15-0.3 | 1.3-1.7 | ≤0.025 | ≤0.035 |
Equivalents steel grades properties
| National Standard | Grade | C% | Si% | Mn% | Cr% | Mo% | Ni% | P% | S% |
| AISI/SAE | 4340 | 0.38-0.43 | 0.15-0.35 | 0.6-0.8 | 0.7-0.9 | 0.15-0.25 | 1.65-2.0 | ≤0.035 | ≤0.04 |
| JIS | SNCM447 | 0.36-0.43 | 0.15-0.35 | 0.6-0.9 | 0.6-1.0 | 0.15-0.3 | 1.6-2.0 | ≤0.035 | ≤0.04 |
| GB | 40CrNiMoA | 0.37-0.44 | 0.17-0.37 | 0.5-0.8 | 0.6-0.9 | 0.15-0.25 | 1.25-1.65 | ≤0.025 | ≤0.025 |
| BS | EN24 | 0.36-0.43 | 0.1-0.35 | 0.45-0.7 | 1.0-1.4 | 0.2-0.35 | 1.3-1.7 | ≤0.035 | ≤0.035 |
34CrNiMo6 / 1.6582 Steel Mechanical Properties
| Diameter (mm) |
< 16 | 16~ 40 | 40~100 | 100~160 | 160 ~250 |
| Thickness t (mm) | < 8 | 8~20 | 20~60 | 60~100 | 100~160 |
| Tensile strength Rm (N/mm2) | 1200 – 1400 | 1100 – 1300 | 1000 – 1200 | 900 – 1100 | 800 – 950 |
| Elongation A (%) | 9 min | 10 Min | 11 Min | Min 12 | 13 Min |
| Reduction of area Z (%) | 40Min | 45 Min | 50Min | 55Min | 55MIn |
| Toughness CVN (J) | 35Min | 45Min | 45Min | 45Min | 45 Min |
| Yield strength Re (N/mm²) | 1000 Min | 900 Min | 800 Min | 700 Min | 600 Min |
Heat Treatment
Normalizing For 34CrNiMo6 Steel
1.Nominal normalizing temperature:840-900°C
2.Hold the temperature for several hours
3.Cooling in the air
Annealing For 34CrNiMo6 Steel
1.Nominal Annealing temperature:800-860°C
2.Cool slowly in the furnace
3.Maximum Brinell hardness of 270
Hardening and Tempering(QT) For 34CrNiMo6 Steel
1.Nominal Hardening temperature:830-865°C
2.Hold at this temperature then quench in oil
3.Tempering as soon as possible when the temperature low to ambient temperature
4.Heat the steel carefully to a suitable temperature selected by reference to a tempering chart or table
5.The usual tempering temperature is 600°C which depending on the actual requirements
6..keep the material out of the furnace, then cool in the air
Application
34CrNiMo6/1.6582 Alloy Steel is widely used in heavy-duty Shafts, Gears, Axles, Spindles, Couplings, Pins etc. Used for large axles, machine components, tools, and high strength fasteners.
2. Chemical Composition of carbon steel round bar:
Company introduction: Liaocheng City Kuncheng Steel Pipe Co., Ltd. is an industrial and trading company.
Products introduction: We mainly produce and deal with carbon steel pipes and alloy steel pipes. In addition, steel rods, steel sheets, steel building materials and machinery parts are also our general trading products. We are not only a manufacturer but also a stock keeper. We normally keep more than 5,000 tons of pipes in various sizes and standards. Our stock pipe size ranges from 20mm to 406mm in outside diameter and from 2mm to 70mm in wall thickness.
Export to: With competitive price and excellent quality our products have been exported to America, Japan, Greece, Russia,Spain, Chile and many other countries. I hope we can establish business relationship with you and expand your business scale. we are professional and experienced supplier of steel products in china. We will provide you with high quality and low price, and we also offer good service. If our products can meet your needs, please contact us freely. We are looking forward to cooperating with you, and welcome your inquiry!
Jay
Sales department
Liaocheng Kuncheng steel pipe CO., Ltd.
Room A0816 ChuangYe Building,
Liaocheng City,Shandong Province,China
Tel&Fax:0635-2930669
Mobile:0086-13184174934
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