EN41B Round Bars, EN41B Round bar manufacturer, EN41B Rods Supplier, EN41B Stockiest, EN41B Dealers, EN41B Distributors, EN41B Whole sellers.
 
En41B (905M39) is a 1.5% Chromium Aluminium Molybdenum Nitriding Steel. En41B is a very popular grade of low carbon Manganese Free Cutting Steel, which is most suitable for the manufacture of repetition turned components, such as nuts, bolts, hydraulic fittings and studs, particularly where intricate drilling and machining operations are involved. It can be case-hardened, producing components with enhanced wear resistance. En41B is Chromium Aluminium Molybdenum Steel which is usually supplied in the hardened and tempered condition. Properties of the steel combine high wear resistance together with toughness and ductility. It is defined by its suitability for nitriding from which 905M39 can give a hard ware resistance case up to 68HRc. Suitable for applications requiring excellent resistance to wear and abrasion.
 
Grade Application:
EN41B is used for applications which requires high wear resistance and abrasion in the automotive, textile and general engineering industries.
Typical applications: connecting rods, small extrudes, valve stems, brick press plates, clutch plates, gudgeon, track and shackle pins,injection molding equipment, hydraulic cylinders, gears and pinions, die inserts, valve and gate parts, cams, piston pins, etc.
 
Equivalent grades:
BS 970:1955 :EN24T. BS 970:1991 :817M40T
 
Addition to other grades:
MS, EN1a, EN3b, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, 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, ASTM Sa-36, ASTM SA-105, SAE 1018, SAE 4140, SAE 8620, 16MNCR5, 20MNCR5, C20, C35, C40, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.
 
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Chemical composition:
The following table shows the chemical composition of EN41B steel:
Element
C
Si
Mn
S
P
Cr
Mo
Al
Content (%)
0.35-0.45
0.10-0.45
0.65
≤ 0.035
≤ 0.035
1.40-1.80
0.10-0.25
1.90-1.30
 
Mechanical Properties:
Condition
Tensile Strength,Mpa
Yield Strength,Mpa
Elongation, %
Izod,KCV J
Hardness,HB
R
700-850
480
16
28
201-255
S
775-925
525
14
16
223-277
 
Hardness:
Hardness:max 229HB
 
Heat treatment:
Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities.
 
Hardening:
930 – 970°C, water or oil quench.
 
Tempering:
600 – 650°C, Cooling in air.
 
Physical Properties:

 

Thermal Properties:
 
Forging Properties:
850 – 1200°C , cooling as slowly as possible in sand after forged.
 
Stress Reliving:

 

Normalizing:
930 – 970°C, Cooling in air.
 
Annealing:
840 – 870°C, Cooling in furnace.
 
Density:
Density (G/CM 3) – 8.08.
 
Machine ability:
 
Welding:

 

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