IS 35Mn6Mo3 Round Bar
35Mn6Mo3 is a high tensile steel which has excellent ductility and good shock resistance. 35Mn6Mo3 shares the same good mechanical properties of 40C8 but is more resistant to shear loading and frictional wearing. It is an alternative alloy steel grade to other chromium and nickel high tensile steel specifications and is readily machinable in the supplied condition. 35Mn6Mo3 is a popular 'all-rounder' and is used in a wide variety of general engineering applications.
35Mn6Mo3 generally supplied in as rolled (no heat treatment) condition. 35Mn6Mo3 excellent ductility and shock resistance. As such itis a good choice for a range of general engineering uses. It has good mechanical properties and has freedom from temper brittleness ideal for bolts, nuts, shafts and axles. Readily machinable.
35Mn6Mo3 is a manganese molybdenum steel that has excellent ductility and good machinability. It has a high tensile strength as well an ability to withstand shock loading. It finds many uses in engineering applications such as shafts, pins and bolts.
Indian Standard IS 35Mn6Mo3 is a low alloy steel intended to be used in the hardened and tempered conditions.
It also comes under Indian Standard IS 35Mn6Mo3 Standard.
IS 9175-16 (1987): Rationalized Steels for Automobile and Ancillary Industry - Part 16 35Mn6Mo3 Grade steel [MTD 16: Alloy Steels and Forgings]
35Mn6Mo3 Chemical Composition :
| Elements | Min. | Max. |
| C | 0.30 | 0.40 |
| Si | 0.15 | 0.35 |
| Mn | 1.30 | 1.80 |
| Mo | 0.20 | 0.35 |
| S | - | 0.035 |
| P | - | 0.035 |
Hardness :
The maximum hardness for grade 35Mn6Mo3 of steel delivered in the annealed condition, when determined in accordance with IS : 1500-1983*, shall be 220 HB.
The surface hardness obtainable of this grade of steel by flame or induction hardening shall be 53-59 HRC.
Applications of 35Mn6Mo3 Grade :
• Connecting rods
• High load couplings
• Pistons
• High tensile shafts
• Gears
Key features :
• High tensile steel
• More resistant to shear loading and frictional wearing than 40C8
• Good mechanical properties
• Good shock resistance
| MATERIAL DESIGNATION: | 35Mn6Mo3 |
| Standard: | IS |
| Country: | India |
| No | Subgroup | Standards |
| 1 | IS 11169-1 (2022) | Steels for cold heading/cold extrusion application Part 1 Wrought carbon and low alloy steels |
| 2 | IS 13352 (1992) | Stock for forgings produced from continuously bast billets, blooms, slabs and bars - specification |
| 3 | IS 14698 (1999) | Carbon and Low Alloy Steel Billets, Blooms, Slabs and Bars for Manufacture of Shell Bodies and Proof Shots Used in Defence Services - Specification |
| 4 | IS 1570-4 (1988) | Schedules for wrought steels Part 4 Alloy steels (Alloy constructional and spring steels) with specified chemical composition andd mechanical properties |
| 5 | IS 3930 (1994) | Flame and induction hardening steels |
| 6 | IS 4367 (2006) | Alloy steel forgings for general industrial use - Specification |
| 7 | IS 5517 (2006) | Steels for Hardening and Tempering - Specification |
| 8 | IS 9175-1 (1979) | Rationalized Steels for the Automobile and Ancillary Industry - Part 1 :Chemical Composition |
| 9 | IS 9175-16 (1987) | Specification for Rationalized Steels for Automobile and Ancillary Industry, Mechanical and Physical Properties - Part 16 35Mn6Mo3 Grade steel |