EN41B
Grade Introduction:
En41B Alloy steel is a 1.5% Chromium Aluminum 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 Alloy steel is Chromium Aluminum Molybdenum Steel which is usually supplied in 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 hardware resistance case up to 68HRc. Suitable for applications requiring excellent resistance to wear and abrasion.
Equivalent Grades
Germany | China | Japan | UK | France |
41CrAlMo7/1.8509 34CrAlMo5/1.8507 |
38CrMoAl | SACM645 | 905M39/905M31 | 40CAD6.12/30CAD6.12 |
Grade Application
EN41B is used for applications that require 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.
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 to 850mm |
Rolled Round Bars | 16mm Dia and above |
Forged Flat Bars | Thickness: 32mm to 510mm, Width: 65mm to 1050mm |
Rolled Flat Bars | Thickness: 6mm to 110mm, Width: 25mm to 510mm |
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 |
Heat Treatment
Heat treatment temperatures, including the 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 workpiece transfer facilities.
Hardness
Hardness: max 229HB
Hardening
930 – 970°C, water or oil quench.
Thermal Properties
Thermal Conductivity W/mK – 45
Coefficient of Thermal Expansion 0-250°C – 13.1
Forging Properties
850 – 1200°C, cooling as slowly as possible in the sand after forged.
Stress Relieving
If machining operations have been heavy or if the tool has an unbalanced section, remove stresses before hardening by heating up to 700°C, equalize, then cool slowly.
Welding
Not recommended.
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 |
Physical Properties
DENSITY (G/CM 3) |
8.08 |
DENSITY (LB/IN 3) |
0.292 |
MELTING POINT (°C) |
1425 |
MELTING POINT (°F) |
2600 |
Tempering
600 – 650°C, Cooling in air.
Normalizing
930 – 970°C, Cooling in air.
Annealing
840 – 870°C, Cooling in the furnace.
Density
Density (G/CM 3) – 8.08.
Machinability
Readily machinable.
Supply Cities
Ambattur, Bangalore, Chennai, Coimbatore, Dindigul, Guindy, Madurai, Nellore, Hyderabad, Tirupur, Tuticorin, Madurai, Andhra Pradesh, Karnataka, Puducherry, Kerala, Kanyakumari, Telangana, Salem, Thanjavur, Trichy, Erode, Vellore, Karur, Nagercoil, Kanchipuram, Karaikudi, Pudukottai, Nagapattinam.
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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.