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EN41B Alloy Steel Round Bar

Chromium-Aluminum-Molybdenum Nitriding Alloy Steel

Standard
BS 970 (905M39 / EN41B) / EN 10085
Werkstoff / UNS
Werkstoff: 1.8509 / 1.8507UNS: K24065
Common Equivalents
34CrAlMo7-10
Overview

About EN41B Alloy Steel

C P Steel Suppliers supplies EN41B Alloy Steel for engineering, industrial machinery and manufacturing applications. It is classified as Chromium-Aluminum-Molybdenum Nitriding Alloy Steel. Common equivalents include 34CrAlMo7-10. Available forms include ROUND BAR.

Contact our Mumbai team with your required size and quantity to confirm availability, documentation and delivery.

EN41B Round Bar Suppliers, EN41B Stockist, EN41B Big Dia, EN41B Cut to size as per requirement, EN41B vs 34CrAlMo7-10, EN41B Flat Bar, EN41B Small Quantity, EN41B Larger Dia, EN41B Circle, Ring. EN41B Mumbai, Chennai, Tamil Nadu, Gujarat, Pune, Maharashtra, India etc.

Specification

Chemical Composition

ElementComposition (wt%)
CCarbon
0.35 - 0.43%
MnManganese
0.40 - 0.65%
SiSilicon
0.10 - 0.45%
CrChromium
1.40 - 1.80%
MoMolybdenum
0.15 - 0.25%
AlAluminum
0.90 - 1.30%
PPhosphorus
max 0.025%
SSulfur
max 0.025%
FeIron
Balance
Performance

Mechanical, Physical & Processing Properties

PropertyValue / Reading
Tensile Strength850 - 1000 MPa (Condition T) / 925 - 1075 MPa (Condition U)
Yield Strengthmin 680 - 755 MPa
Elongationmin 12 %
Hardness Brinell248 - 302 HBW (Core) / 950 - 1100 HV (~67 - 70 HRC Nitrided Case)
PropertyValue / Reading
Density7.70 g/cm³
Melting Point1430 °C
Modulus Of Elasticity210 GPa
Thermal Conductivity38.0 W/m·K
PropertyValue / Reading
WeldabilityDifficult to weld due to aluminum content; not welded after nitriding.
MachinabilityGood in quenched, tempered, and stress-relieved condition prior to nitriding.
Case HardeningPremier aluminum-bearing nitriding steel achieving the highest surface hardness (up to 1100 HV) for extruder screws and cylinders.
Corrosion ResistanceGood wear and atmospheric corrosion resistance on nitrided surfaces.
Cross Reference

Equivalent Grades by Standard

Standard / RegionEquivalent Grade
Indian IS40Cr7Al10Mo2 (IS 1570)
European EN41CrAlMo7-10 / 34CrAlMo5-10 (EN 10085)
Germany DIN41CrAlMo7 / 34CrAlMo5
Japan JISSACM645 (JIS G4053)
UK (BS)905M39 / EN41B (BS 970)
USA (SAE / AISI)ASTM A355 Class A / Nitralloy 135M
Availability

Available Forms & Sizes

  • ROUND BAR
Form TypeSize Range Available
Black Round BarsOD 25MM - OD 250MM
FAQ

EN41B — frequently asked questions

What is the equivalent of EN41B?
Common equivalents include 34CrAlMo7-10. Standards: Indian IS: 40Cr7Al10Mo2 (IS 1570); European EN: 41CrAlMo7-10 / 34CrAlMo5-10 (EN 10085); Germany DIN: 41CrAlMo7 / 34CrAlMo5; Japan JIS: SACM645 (JIS G4053); UK (BS): 905M39 / EN41B (BS 970); USA (SAE / AISI): ASTM A355 Class A / Nitralloy 135M.
Which forms of EN41B are available?
EN41B is available as ROUND BAR.
Where can I buy EN41B Alloy Steel in Mumbai or across India?
C P Steel Suppliers supplies EN41B Alloy Steel from Mumbai. Contact us with your size and quantity to confirm availability and delivery.

Interested in Alloy Steel EN41B?

Tell us the size and quantity you need and we will get back to you.