MS – Carbon Steel
Grade Introduction:
MS mild/low carbon steel has excellent weldability, produces a uniform and harder case, and is considered the best steel for carburized parts. MS mild/low carbon steel offers a good balance of toughness, strength, and ductility. MS hot rolled steel has significant mechanical properties, improved machining characteristics, and has a high Brinell hardness measure.
Specific manufacturing controls are used for surface preparation, chemical composition, rolling and heating processes. All these processes develop a supreme quality product that is suited to fabrication processes such as welding, forging, drilling, machining, cold drawing, and heat treating.
Applications of MS Mild / Low Carbon Steel
- It is used in bending, crimping, and swaging processes. Carburized parts that include worms, gears, pins, dowels, non-critical components of tool and die sets, tool holders, pinions, machine parts, ratchets, dowels, and chain pins use MS mild/low carbon steel.
- It is widely used for fixtures, mounting plates, and spacers.
- It is suitably used in applications that do not need high strength of alloy steels and high carbon.
- It provides high surface hardness and softcore to parts that include worms, dogs, pins, liners, machinery parts, special bolts, ratchets, chain pins, oil tool slips, tie rods, anchor pins, studs, etc.
- It is used to improve drilling, machining, threading, and punching processes.
- It is used to prevent cracking in severe bends
Our Supply Range
We supply to automotive ancillaries and OEM customers. The products we manufacture are used as input for manufacturing of automotive and general engineering components. These components are further assembled into systems fitted in automobiles and other engineering applications.
| Product Type | Size Range |
|---|---|
| Forged Round Bars | 140mm Dia and above |
| Rolled Round Bars | 12mm Dia and above |
| Forged Flat Bars | Thickness: 32mm to 510mm, Width: 65mm to 1050mm |
| Rolled Flat Bars | Thickness: 6mm to 110mm, Width: 25mm to 810mm |
Chemical Composition
The following table shows the chemical composition of MS steel:
| Element | C | Fe | Mn | P | S |
| Content(%) | 0.14-0.20 | 98.81-99.26 | 0.60-0.90 | ≤ 0.040 | ≤ 0.050 |
Mechanical Properties
| Mechanical Properties | Metric | Imperial |
| Hardness, Brinell | 126 | 126 |
| Hardness, Knoop (Converted from Brinell hardness) | 145 | 145 |
| Hardness, Rockwell B (Converted from Brinell hardness) | 71 | 71 |
| Hardness, Vickers (Converted from Brinell hardness) | 131 | 131 |
| Tensile Strength, Ultimate | 440 MPa | 63800 psi |
| Tensile Strength, Yield | 370 MPa | 53700 psi |
| Elongation at Break (In 50 mm) | 15.0 % | 15.0 % |
| Reduction of Area | 40.0 % | 40.0 % |
| Modulus of Elasticity (Typical for steel) | 205 GPa | 29700 ksi |
| Bulk Modulus (Typical for steel) | 140 GPa | 20300 ksi |
| Poissons Ratio (Typical For Steel) | 0.290 | 0.290 |
| Machinability (Based on AISI 1212 steel. as 100% machinability) | 70 % | 70 % |
| Shear Modulus (Typical for steel) | 80.0 GPa | 11600 ksi |
Heat Treatment
A significant amount of this grade of steel is used in the as- forged condition since its machinability in this condition has been found to be better than that in the normalized condition.
Little is to be gained, at this carbon level, by a quenching treatment.
Hardening
This process requires heating to be carried out between 780°C – 820°C. MS mild/low carbon steel is then quenched in water.
Forging Properties
This process requires heating at 1150°C – 1280°C and MS mild/low carbon steel are held until the temperature becomes constant. 900°C is the minimum temperature required for the forging process. The steel is cooled in the air after this process.
Stress Relieving
A temperature of 500°C – 700°C is required to relieve stress in MS mild/low carbon steel that is later cooled down in still air.
Machinability
The machinability of MS mild/low carbon steel is graded at 78% of B1112.
Welding
MS mild/low carbon steel can be instantly welded by all the conventional welding processes. Welding is not recommended for MS mild/low carbon steel when it is carbonitrided and carburized.
Low carbon welding electrodes are used in the welding procedure. Post-heating and pre-heating are not necessary; although pre-heating can be performed for sections over 50 mm. Post-weld stress-relieving also has benefits, like the pre-heating process.
Tempering
MS mild/low carbon steel is tempered at 150°C – 200°C to improve case toughness. This process has little or no effect on hardness. Grinding cracks are reduced when MS mild/low carbon steel is tempered.
Physical Properties
| Physical Properties | Metric | Imperial |
| Density | 7.87 g/cc | 0.284 lb/in3 |
Normalizing
MS mild/low carbon steel should be heated at 890°C – 940°C and then cooled in still air.
Annealing
The MS mild/low carbon steel is heated at 870°C – 910°C and allowed to cool in a furnace.
Density
| Density | 7.87 g/cc | 0.284 lb/in3 |
Supply Cities
Ambattur, Bangalore, Chennai, Chengalpattu, Coimbatore, Dindigul, Guindy, Madurai, Nellore, Hyderabad, Hosur, Tiruvallur, Tirupur, Tuticorin, Andhra Pradesh, Karnataka, Puducherry, Kerala, Kanyakumari, Telangana, Salem, Thanjavur, Trichy, Erode, Vellore, Karur, Nagercoil, Kanchipuram, Karaikudi, Pudukottai, Nagapattinam, Nemili Thiruvanmiyur, Perungudi, Kurichi, Kakkalur, Keelanagachi, Paramakudi, Thandarai, Alathur, Kodur, Mallur, Gangaikondan, Sriperumbudur, Oragadam,Irungattukottai, Vallam Vadagal, Siruseri,Eraiyur, Manapparai, Perundurai, Ranipet, Gummidipoondi, Cheyyar, Manamadurai, Tindivanam , Mappedu , Thervoykandigai , Nilakottai, Shoolagiri, Kurubarapalli, Bargur, Thirumudivakkam, Cuddalore, Pillaipakkam.
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MS , EN8, EN8D, EN1A, EN3B, EN8M, EN32B, EN19, EN24, SAE 1018, C45, CK45, SAE 4140, IS2062, 42CRMO4, 16MNCR5, 20MNCR5, EN36C, EN353, SAE 1010, EN15AM, EN31, EN9, SAE8620, SCM420
Addition to other grades
MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, OHNS, M2, M35, M42, DIN1.2714, P20, P20+S, P20+Ni, SCM420, ASTMSA-36, ASTMSA-105, SAE1018, SAE4140, SAE8620, 16MNCR5, 20MNCR5, C20, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.
