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EN 8 /8D

EN8 Carbon Steel
EN8 Alloy Steel

EN8 STEEL

Grade Brief

A cost-effective steel for general engineering.

EN8 is an unalloyed medium carbon steel known for its high strength, durability, and good resistance to wear and temperature. It is widely used in general-purpose engineering applications where alloy steels are not economically justified. Compared to alloy steels, EN8 offers a more cost-effective solution while still providing dependable mechanical performance.

Chemical Composition

EN8 steel chemical composition.

Element Content (%)
Carbon (C) 0.35 – 0.45
Manganese (Mn) 0.60 – 1.00
Silicon (Si) 0.05 – 0.35
Phosphorus (P) ≤ 0.06
Sulphur (S) ≤ 0.06
Key Features

Performance for general engineering.

01

Material Type: Medium Carbon, Unalloyed Steel

02

Strength: High tensile strength with good toughness

03

Surface Properties: Excellent surface hardness with moderate wear resistance when flame or induction hardened

04

Heat Treatment: Can be heat-treated to achieve higher hardness and tensile strength

05

Machining: Good machinability; weldability is fair (precautions required)

06

Cost Efficiency: Lower cost than alloy steels with sufficient strength for standard applications

Product Forms

EN8 available in multiple forms.

01

Bright Bars

EN8D Carbon Steel Bright Bars are available for improved dimensional accuracy and surface finish

02

Ground Bars

Precision-ground or surface-ground rods supplied as per customer specifications

03

Cut-to-Size

Bars available in round, square, flat, and hexagonal profiles, cut to required dimensions

Mode of Supply

EN8 available in the shapes you need.

Kuber Multi Metals is the largest stockiest and supplier of EN8 tool steel in flat, square and round bar. We provide steel in all sizes as your requirements. EN8 die steel is available in flat, square and round shape. Consult our team who will assist you for EN8 steel query.

EN8 Round Steel
ROUND
EN8 Square Steel
SQUARE
EN8 Flat Steel
FLAT
Mechanical Properties

Strength and hardness.

Condition Tensile Strength (MPa) Yield Strength (MPa) Hardness (HB) Elongation (%)
As rolled / Normalized 550 – 660 ~280 152 – 207 16 – 22
Quenched & Tempered 600 – 1000 (varies with tempering) 400 – 650 200 – 300 10 – 15
Heat Treatment

Controlled treatment for required performance.

Process Temperature Range (°C) Notes
Normalizing 830 – 860 Air cool
Annealing 680 – 700 Furnace cool
Hardening 820 – 860 Oil or water quench
Tempering 550 – 660 To required hardness/strength
Application

Built for general engineering.

Shafts & axles, Studs & bolts, Gears & machine parts, Automotive and general engineering components
EN8 Steel

Strength, hardness and cost-effective performance.

EN8 medium carbon steel is the best and cheapest alloy option for various engineers and automotive applications. Its combination of strength and hardness makes this grade a rather effective wear resistance, with quite good performance without exorbitant costs for alloy steels. It has thermal versatility and is manufactured into different product forms applicable for use in shafts, gears, bolts, and machines, and so suitable for wear during long-term or harsh conditions.