Description
30CrNiMo8 Round Bars / 1.6580 Round Bars
30CrNiMo8 Round Bars is a Alloy Steel with medium hardenability designed for heavy duty components, characterized by high elasticity and strength properties reaching over 1560 N/mm2 at small diameters. When softened, the hardness reaches max. 248 HRB. It is also characterized by its resistance to variable loads and impacts. The material is not suitable for welding and ultimately requires additional preheating. Grade 30CrNiMo8 / 1.6580 is used for production of heavily loaded parts, shafts and drive axes, steering shafts, crankshafts of engines, screws and elements exposed to temperatures in the power industry.
1.6580 is a heat treatable, low alloy steel containing Nickel, Chromium and Molybdenum. It is known for its toughness and capability of developing high strength in the heat treated condition while retaining good fatigue strength.
30CrNiMo8 Chemical composition of 1.6580 :
| 1.6580 | EN 10269 : 1999 EN 10250-3 : 2000 | EN 10083-3 : 2006 | ||
| 30CrNiMo8 | Min. | Max. | Min. | Max. |
| C | 0.26 | 0.34 | 0.26 | 0.34 |
| Si | – | 0.40 | – | 0.40 |
| Mn | 0.30 | 0.60 | 0.50 | 0.80 |
| P | – | 0.035 | – | 0.025 |
| S | – | 0.035 | – | 0.035 |
| Cr | 1.80 | 2.20 | 1.80 | 2.20 |
| Mo | 0.30 | 0.50 | 0.30 | 0.50 |
| Ni | 1.80 | 2.20 | 1.80 | 2.20 |
Standard :
EN 10083-3: 2006 Steels for quenching and tempering. Technical delivery conditions for alloy steels
EN 10269: 1999 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
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
Applications of 1.6580 / 30CrNiMo8 Round Bar :
For permanently stressed components with large cross sections for automotive and mechanical engineering. For economic performance under severe dynamic stress, parts must be designed for optimum strength or toughness.
The tempering steel 30CrNiMo8 is used for components in automotive engineering and general mechanical engineering with high demands on strength and toughness along with good hardenability:
High-strength fasteners and connecting elements
Heavy-duty automotive components
Transmission shafts and gears
Highly stressed machine parts
Critical components in heavy machinery
Aerospace structural components
Aircraft landing gear components
Defense industry applications
Oil and gas industry components
High-load bearings and rollers
Crankshafts for high-performance engines
Drive components in heavy equipment
Substitutes, equivalents and other species designations :
30ChN2MA, 30HN2MA, 30ХН2МА, 30NCD8, 30CND8, 31CrNiMo8, NCMo6 Z, 31CrNiMo8H, 31CrNiMo8HH, 31CrNiMo8HL, SNCM431, 30MoCrNi20, C5432
