Alloy Steel C40E Round Bar C40E Bars C40E Rods

Alloy Steel C40E Round Bar C40E Bars C40E Rods

Name: Alloy Steel C40E Round Bar C40E Bars C40E Rods
Brand: JAYANT IMPEX
Price: 169.0 INR
Availability: InStock

169.0 INR/Kilograms

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Product Details:

Material Alloy Steel
Type Round Bar / Rod
Finish Bright / Black
Length 3 to 6 meters (or as required)
Technique Hot Rolled
Standard DIN, ASTM, BS, JIS, ISO
Specific Use Automobile and Engineering Components
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Alloy Steel C40E Round Bar C40E Bars C40E Rods Price And Quantity

Minimum Order Quantity 1 Kilograms
Price 169.0 INR/Kilograms

Alloy Steel C40E Round Bar C40E Bars C40E Rods Product Specifications

Length 3 to 6 meters (or as required)
Material Alloy Steel
Type Round Bar / Rod
Finish Bright / Black
Diameter 10mm to 300mm
Application Construction, Engineering, Machinery Manufacturing
Processing Forged / Rolled
Tolerance H8, H9, or as required
Grade C40E
Technique Hot Rolled
Standard DIN, ASTM, BS, JIS, ISO
Specific Use Automobile and Engineering Components

Hardness 170-210 HB
Testing Ultrasonic Tested
Edge Condition Sharp / Round
Surface Treatment Polished / Peeled
Minimum Order Quantity As per requirement
Delivery Condition Annealed / Hardened and Tempered
Shape Round
Packaging Standard Export Worthy Packing

Product Description

C40E is a European-standard (EN 10083-2) non-alloy medium-carbon engineering steel. The "E" suffix signifies that the material is produced with controlled maximum limits on impurity elements like phosphorus and sulfur, making it cleaner and more responsive to uniform heat treatment compared to standard commercial carbon steel (such as C40).

It is widely distributed as hot-rolled, bright cold-drawn, or turned round bars and rods for structural and mechanical applications requiring greater strength than mild steel.

Technical Specifications

1. Chemical Composition (EN 10083-2)

Because it is a non-alloy steel, its performance stems from carefully balanced carbon and manganese ratios. The low maximum thresholds for sulfur and phosphorus reduce inclusion clusters, lowering the risk of brittle failure during cyclic load operations.

Element	Min (%)	Max (%)
Carbon (C)	0.37	0.44
Manganese (Mn)	0.50	0.80
Silicon (Si)		0.40
Chromium (Cr)		0.40
Nickel (Ni)		0.40
Molybdenum (Mo)		0.10
Phosphorus (P)		0.030
Sulfur (S)		0.035

2. Global Material Equivalents

C40E is easily cross-referenced across international standards with minor composition variances:

Europe (EN / WNr): C40E / 1.1186 (Replaces older DIN Ck40 designation)
USA (AISI / SAE): 1040 / 1042
Germany (DIN): Ck40 / Cm40
Japan (JIS): S40C
United Kingdom (BS): 080M40 (En8)
China (GB/T): 40 Steel

Mechanical Properties (Normalized vs. Quenched & Tempered)

The mechanical performance of C40E depends entirely on its final heat-treated state and the cross-sectional thickness of the round bar.

Property	Normalized State	Quenched & Tempered (Q+T) State
Tensile Strength ( $R_m$ )	$ge 550 text{ MPa}$	$580 - 750 text{ MPa}$
Yield Strength ( $R_e$ )	$ge 300 text{ MPa}$	$ge 380 text{ MPa}$
Elongation ( $A_5$ )	$ge 17%$	$ge 19%$
Impact Energy ( $KV$ )		$ge 35 text{ J}$
Typical Hardness	$170 - 220 text{ HBW}$	$200 - 240 text{ HBW}$

Typical Applications

C40E round bars strike a versatile balance between structural strength and high machinability, making them highly popular across the automotive, hydraulic, and construction sectors:

Engine Components: Lightly loaded crankshafts, starter ring gears, and robust connecting rods.
Transmission Hardware: Splined shafts, structural pins, keys, spacer rings, and low-load counter gears.
Hydraulics & Pneumatics: Main cylinder rams, piston rods, tie rods, and valve manifolds.
General Engineering: Heavy-duty studs, machinery levers, brackets, and hand tools.

Processing & Fabrication Notes

Surface Treatment Advantage: C40E is an excellent candidate for induction or flame hardening. If your application requires a tough, shock-absorbing interior paired with a wear-resistant exterior, induction treatment can push the surface layer shell hardness up to 55 HRC.

Machinability: In its normalized or annealed supply condition, C40E scores exceptionally well for cutting, turning, drilling, and tapping on CNC machinery.
Welding Limitations: Due to its carbon ceiling reaching up to 0.44%, C40E is moderately difficult to weld compared to mild steel. Preheating the bar stock to $150^circtext{C} - 250^circtext{C}$ is highly recommended for cross-sections over 15mm to eliminate micro-cracking risks in the heat-affected zone (HAZ).

Comprehensive Specifications for Diverse Needs

Our C40E alloy steel round bars are meticulously manufactured to meet varied industry standards. With options for surface finish, edge condition, and delivery state, clients can select from annealed or hardened and tempered materials depending on their application. Each piece undergoes ultrasonic testing to ensure premium quality and reliability.

Strict Testing and Quality Assurance

All C40E rods and bars are subject to thorough ultrasonic evaluation for detecting subsurface flaws, guaranteeing their strength and integrity. Our standard export-worthy packaging ensures safe delivery, preserving material quality during transit and storage. This commitment to quality supports critical applications in automotive, construction, engineering, and fabrication.

FAQ's of Alloy Steel C40E Round Bar C40E Bars C40E Rods:

Q: How are Alloy Steel C40E Round Bars processed for delivery?

A: Alloy Steel C40E Round Bars are delivered in either an annealed or hardened and tempered condition, depending on client specifications. The finishing process involves polishing or peeling the surface to achieve the required smoothness and appearance, enhancing both mechanical properties and surface quality.

Q: What testing procedures are followed to ensure quality?

A: Each C40E bar undergoes ultrasonic testing to detect internal flaws such as cracks or voids. This non-destructive method ensures that only defect-free products are supplied, meeting strict quality standards necessary for demanding industrial uses.

Q: Where can I source Alloy Steel C40E Rods in India?

A: Alloy Steel C40E Rods are available through a network of dealers, exporters, fabricators, manufacturers, producers, retailers, and suppliers across India. These vendors provide materials tailored to your specifications, including minimum order quantity flexibility.

Q: When should I choose annealed versus hardened and tempered C40E bars?

A: Annealed C40E bars offer greater machinability and are suitable for forming or fabrication processes. Hardened and tempered bars provide higher strength and wear resistance, ideal for heavy-duty components in shafts, gears, and machine parts.

Q: What are the typical applications for C40E Round Bars?

A: C40E Round Bars are widely utilized in automotive parts, engineering machinery, fasteners, axles, and various fabrication projects due to their balanced hardness (170-210 HB) and excellent mechanical properties post-heat treatment.

Q: How does the stringent packaging benefit international buyers?

A: Standard export-worthy packaging protects the bars from moisture, corrosion, and mechanical damage during transportation and storage, ensuring materials arrive in optimal condition regardless of destination.

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