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EN42J Alloy Steel Round Bar

High Carbon Spring Steel

Standard
BS 970 (CS80 / CS70) / EN 10132-4
Werkstoff / UNS
Werkstoff: 1.1249 / 1.1269UNS: G10750 / G10800
Common Equivalents
C80C70S6
Overview

About EN42J Alloy Steel

C P Steel Suppliers supplies EN42J Alloy Steel for engineering, industrial machinery and manufacturing applications. It is classified as High Carbon Spring Steel. Common equivalents include C80, C70S6. Available forms include ROUND BAR, FLAT BARS, SHEET, PLATE, COIL.

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

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Specification

Chemical Composition

ElementComposition (wt%)
CCarbon
0.70 - 0.85%
MnManganese
0.50 - 0.90%
SiSilicon
0.15 - 0.35%
PPhosphorus
max 0.025%
SSulfur
max 0.025%
FeIron
Balance
Performance

Mechanical, Physical & Processing Properties

PropertyValue / Reading
Tensile Strength550 - 690 MPa (Annealed) / 1300 - 1800 MPa (Hardened & Tempered)
Yield Strengthmin 350 MPa (Annealed) / min 1150 MPa (Hardened & Tempered)
Elongation15 - 22 % (Annealed)
Hardness Brinellmax 192 HBW (Annealed) / 42 - 52 HRC (Hardened & Tempered)
PropertyValue / Reading
Density7.85 g/cm³
Melting Point1450 °C
Modulus Of Elasticity210 GPa
Thermal Conductivity46.0 W/m·K
PropertyValue / Reading
WeldabilityPoor due to high carbon content; welding not recommended for spring applications.
MachinabilityGood in spheroidized annealed state.
Case HardeningThrough-hardened by oil quenching and tempering for flat springs, blades, and clips.
Corrosion ResistanceLow; requires oiling, phosphating, or plating.
Cross Reference

Equivalent Grades by Standard

Standard / RegionEquivalent Grade
Indian IS80C6 / 75C6 (IS 2507)
European ENC75S / C80S (EN 10132-4)
Germany DINC75 / Ck75 / C80 / C70S6
Japan JISSK85 / SK5 / SUP3
UK (BS)CS80 / CS70 / EN42J (BS 970)
USA (SAE / AISI)SAE 1074 / SAE 1075 / SAE 1080
Availability

Available Forms & Sizes

  • ROUND BAR
  • FLAT BARS
  • SHEET
  • PLATE
  • COIL
Form TypeSize Range Available
Flat Bars5MM THK - 25MM THK
FAQ

EN42J — frequently asked questions

What is the equivalent of EN42J?
Common equivalents include C80, C70S6. Standards: Indian IS: 80C6 / 75C6 (IS 2507); European EN: C75S / C80S (EN 10132-4); Germany DIN: C75 / Ck75 / C80 / C70S6; Japan JIS: SK85 / SK5 / SUP3; UK (BS): CS80 / CS70 / EN42J (BS 970); USA (SAE / AISI): SAE 1074 / SAE 1075 / SAE 1080.
Which forms of EN42J are available?
EN42J is available as ROUND BAR, FLAT BARS, SHEET, PLATE, COIL.
Where can I buy EN42J Alloy Steel in Mumbai or across India?
C P Steel Suppliers supplies EN42J Alloy Steel from Mumbai. Contact us with your size and quantity to confirm availability and delivery.

Interested in Alloy Steel EN42J?

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