40C8 Round Bars, 40C8 Round bar manufacturer, 40C8 Rods Supplier, 40C8 Stockiest, 40C8 Dealers, 40C8 Distributors, 40C8 Whole sellers.
 
Grade Introduction:
Carbon steels have carbon as the key alloying element in their composition. They also contain up to 0.4% silicon and 1.2% manganese. In addition, the residual elements such as copper, molybdenum, aluminum, chromium and nickel are present in these steels.
 
Grade Application:
 
Equivalent grades:
 
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, 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, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.
 
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Chemical composition:
The following table shows the chemical composition of 40C8 steel:
Element
C
Mn
Si
S
P
Content (%)
0.35 – 0.45
0.60 – 0.90
0.10 – 0.35
0.35 Max
0.35 Max
 
Mechanical Properties:
 
PROPERTIES
          METRIC        
                   IMPERIAL          
Tensile strength Ultimate
660 MPa
95700 psi
Tensile strength Yield
560 MPa
81200 psi
Bulk modulus (typical for steels)
140 GPa
20300 ksi
Shear modulus (typical for steels)
80 GPa
11600 ksi
Elastic modulus
190 – 210 GPa
19700- 30458 ksi
Poisson’s ratio
0.27 -0.30
0.27 -0.30
Elongation at break (in 50 mm)
0.1
0.1
Reduction of area
0.4
0.4
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:
PROPERTIES
METRIC
IMPERIAL
Thermal expansion co-efficient
11 µm/m°C
6.11 µin/in°F
Thermal conductivity
49.8 W/mK
346 BTU in/hr.ft².°F
 
Forging Properties:
 
Stress Reliving:
 
Normalizing:
 
Annealing:
 
Density:
 
Machine ability:
 
Welding:
 
Supply Cities:
Ahmedabad, Amaravathi, Ambattur, Bangalore, Belgaum, Chennai, Chittor, Coimbatore, Dindugal, Mysore, Nellore, Hyderabad, Kochi, Mangalore, Tirupur, Thootukudi, Thiruvanthapuram, Madurai, Andhra Pradesh, Karnataka, Puducherry, Kerala, Tamil Nadu, Telangana, Salem, Thajavur, Tiruchurapalli, Combatore, Eerode,  vellore, Ranipet, Sivakasi, Karur, Hosur, Nagercoil, Kanchepuram, Karaikudi, Neyveli, Cuddalore, Kumbakonam, Thiruvannamalai, Pollachi, Rajapalayam, Gudiyatham, Pudukottai, Vaniyambadi, Ambur, Nagapattinam, Trivandrum, vijaywada, Guntur, Thirupathi, Nasaraopet, kakinada, Kurnool, Kadapa, Nizamabad, Mahabubnagar, Karimnagar.