C55MN75

Grade Introduction:

C55MN75 Carbon steels are steels having carbon as the major alloying element. They also contain up to 1.2% manganese and 0.4% silicon. In addition, residual elements like copper, molybdenum, aluminum, chromium, and nickel are present in these steels.

Grade Application:

• Agricultural implements

• Heavy machinery components

• Wear-resistant parts

• Ring-rolling tools

• Battering tools

• Hand tools

• Springs

Equivalent grades:

Addition to other grades:

MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, OHNS, HCHCR, D2, D3, H-11, H-13, CW-1, M2, M35, M42, 2714, SKD-11, P20, P20+S, P20+Ni, SCM 420, ASTM SA-36, ASTM SA-105, SAE 1018, SAE 1020, SAE 4140, SAE 8620, 16MNCR5, 20MNCR5, C20, C35, C40, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, SAE 52100, S40C, S355J2G3.

Our Supply Range:

Price List:

Chemical composition:

Mechanical Properties:

PROPERTIES	METRIC	IMPERIAL
Tensile strength, ultimate	660 MPa	95700 psi
Tensile strength, yield	560 MPa	81200 psi
Modulus of elasticity	190-210GPa	29700-30458ksi
Bulk modulus (typical for steel)	140 GPa	20300 ksi
Shear modulus (typical for steel)	80 GPa	11600 ksi
Poissons ratio	0.27-0.30	0.27-0.30
Elongation at break (in 50 mm)	10%	10%
Reduction of area	40%	40%
Hardness, Brinell	197	197
Hardness, Knoop (converted from Brinell hardness)	219	219
Hardness, Rockwell B (converted from Brinell hardness)	92	92
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)	13	13
Hardness, Vickers (converted from Brinell hardness)	207	207
Machinability (based on AISI 1212 steel. as 100 machinability)	55	55

Hardness:

Heat treatment:

Hardening:

Tempering:

Physical Properties:

PROPERTIES	METRIC	IMPERIAL
Density	7.85 g/cm3	0.284 lb/in3

Thermal Properties:

Forging Properties:

Stress Reliving:

Normalizing:

Normalize at 1550° to 1625°F (843° to 885°C)

Annealing:

Full anneal at 1525° to 1600°F (829° to 871°C) before furnace cooling process anneal at 1100° to 1225°F (593° to 663°C) after cold working

Density:

PROPERTIES	METRIC	IMPERIAL
Density	7.85 g/cm3	0.284 lb/in3

Machinability:

Sulfured or chlorinated cutting oils for high-speed steel cutters
No oil for carbide-tip tools
Grind high-speed steel turning tools
8-12° side rake
6-10° back rake
7-9° side and end relief
12-16° side cutting-edge angle
8-14° end cutting-edge angle
Nose radius 10% of cut depth
Grind carbide-tip tools
6-12° side rake
2-8° back rake
6-10° side and end relief
8-12° end cutting-edge angle
8-16° side cutting-edge angel
1/32” nose radius

Welding:

Supply Cities:

Ahmedabad, Amaravathi, Ambattur, Bangalore, Belgaum, Chennai, Chittoor, Coimbatore, Dindigul, Mysore, Nellore, Hyderabad, Kochi, Mangalore, Tirupur, Tuticorin, Madurai, Andhra Pradesh, Karnataka, Puducherry, Kerala, Tamil Nadu, Telangana, Salem, Thanjavur, Trichy, Erode, Vellore, Ranipet, Sivakasi, Karur, Hosur, Nagercoil, Kanchipuram, Karaikudi, Neyveli, Cuddalore, Kumbakonam, Thiruvannamalai, Pollachi, Rajapalayam, Gudiyatham, Pudukottai, Vaniyambadi, Ambur, Nagapattinam, Trivandrum, Vijayawada, Guntur, Thirupathi, Nazarathpet, Kakinada, Kurnool, Kadapa, Nizamabad, Mahabubnagar, Karimnagar.

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