20MNCR5
 
20MNCR5 Grade Introduction:
20MnCr5 steel is a low alloyed engineering case hardening steel for parts that require core tensile strength of 1000 – 1300 N/mm² and good wearing resistance.
 
This steel is carburizing steel used for components requiring high wear resistance surface, coupled with tough cores to resist shock loads and strength to give large service life.
 
20MNCR5 Grade Application:
20MnCr5|1.7147 gearing steel is widely used for a variety of applications in the used to the gearings in rotating machinery. Typical applications such as valve bodies, pumps, and fittings, the high load of the wheel, bolts, double-headed bolts, gears, internal combustion engine. Electric locomotives, machine tools, tractors, steel rolling equipment, boring machine, railway vehicle, and mining machinery transmission shaft on the steel ball, roller and shaft sleeve, etc.
 
20MNCR5 Equivalent grades: 
ASTM A29/A29M DIN EN 10083/3 JIS G4053 DIN DIN/T DIN17210
 
Addition to other grades:
MS, EN1A, EN3B, EN8, EN8D, EN9, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, OHNS M2, M35, M42, DIN-1.2714, P20, P20+S, P20+Ni, SCM420, ASTMSA-36, ASTM SA-105 , SAE1018, SAE1010, SAE4140, SAE8620, 16MNCR5, 20MNCR5, C20, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.
 
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20MNCR5

 
 
20MNCR5 Chemical composition:
The following table shows the chemical composition of 20MNCR5 steel:
Element
C
Si
Mn
P
S>
Cr
Content (%)
0.17~0.22
≤0.40
1.10~1.40
≤0.035
≤0.035
1.00~1.30
 
20MNCR5 Mechanical Properties:
The mechanical properties of annealed DIN 20MnCr5/1.7131 gearing steel (typical for steel) are outlined in the table below:
Tensile
Yield
Bulk modulus
Shear modulus
Poisson’s ratio
Thermal conductivity
MPa
Mpa
Gpa
Gpa
 
 W/mK
520
415 Min
140
80
0.27-0.30
46.6
 
20MNCR5 Hardness:
 218
 
Heat treatment:
When hardening 20MnCr5 heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each steel component. Other considerations during heat treatment include the type of furnace, quenching medium and work piece transfer facilities. Please consult a heat treatment specialist for full guidance on heat treatment of 20MnCr5 steel.
 
20MNCR5 Hardening:
Hardening °C – 780-820
 
20MNCR5 Tempering:
Tempering °C – at least twice 150-200
 
20MNCR5 Physical Properties:
Thermal Conductivity at °C
20
350
700
W/(m*K)
11.7
12.8
13.5
 
20MNCR5 Thermal Properties:
46.6
 
Forging Properties:
Hot Forming temperature: 1100-850 °C.
 
20MNCR5 Stress Reliving:
Stress-relief annealing °C – 550-600
 
20MNCR5 Normalizing:
850-880 °C, air cool
 
20MNCR5 Annealing:
Heat to 650-700 oC.
 
20MNCR5 Density:
Density (×1000 kg/m3)
7.7-8.03
25
 
20MNCR5 Machinability:
 
20MNCR5 Welding:
20MnCr5 Steel is defined as Mn-Cr case hardening steel as per EN10084 Standard. Compared with 20MnCr5 has a little higher on Carbon, Manganese, and Chromium, both of them have good hardenability, machinability, and wear resistance, but poor in weldability.
 
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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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