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Products/Alloy Steel/SCM420H

SCM420H Alloy Steel Round Bar

Chromium-Molybdenum Case-Hardening Steel with Controlled Hardenability (H-Band)

Standard
JIS G4052 / JIS G4053
Werkstoff / UNS
Werkstoff: 1.7243UNS: H41180 / G41180
Common Equivalents
18CRMO4
Overview

About SCM420H Alloy Steel

C P Steel Suppliers supplies SCM420H Alloy Steel for engineering, industrial machinery and manufacturing applications. It is classified as Chromium-Molybdenum Case-Hardening Steel with Controlled Hardenability (H-Band). Common equivalents include 18CRMO4. Available forms include ROUND BAR.

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

SCM420H Round Bar Suppliers, SCM420H Stockist, SCM420H Big Dia, SCM420H Cut to size as per requirement, SCM420H vs 18CRMO4, SCM420H Flat Bar, SCM420H Small Quantity, SCM420H Larger Dia, SCM420H Circle, Ring. SCM420H Mumbai, Chennai, Tamil Nadu, Gujarat, Pune, Maharashtra, India etc.

Specification

Chemical Composition

ElementComposition (wt%)
CCarbon
0.17 - 0.23%
MnManganese
0.55 - 0.90%
SiSilicon
0.15 - 0.35%
CrChromium
0.85 - 1.25%
MoMolybdenum
0.15 - 0.35%
PPhosphorus
max 0.030%
SSulfur
max 0.030%
FeIron
Balance
Performance

Mechanical, Physical & Processing Properties

PropertyValue / Reading
Tensile Strengthmin 930 MPa (Carburized & Quenched Core)
Yield Strengthmin 600 MPa (Core)
Elongationmin 14 %
Hardness Brinell156 - 207 HBW (Annealed) / 58 - 62 HRC (Carburized Case)
PropertyValue / Reading
Density7.85 g/cm³
Melting Point1440 °C
Modulus Of Elasticity210 GPa
Thermal Conductivity42.5 W/m·K
PropertyValue / Reading
WeldabilityGood in annealed state prior to carburizing.
MachinabilityGood machinability and cold forgeability.
Case HardeningWidely used for automotive transmission gears, shafts, and piston pins with uniform Jominy hardenability.
Corrosion ResistanceLow; requires lubrication or protective coating.
Cross Reference

Equivalent Grades by Standard

Standard / RegionEquivalent Grade
Indian IS20Cr4Mo2
European EN18CrMo4 (EN 10084)
Germany DIN18CrMo4 / 20CrMo5
Japan JISSCM420H / SCM420 (JIS G4052)
UK (BS)708M20
USA (SAE / AISI)SAE 4118H / SAE 4120
Availability

Available Forms & Sizes

  • ROUND BAR
Form TypeSize Range Available
Black Round BarsOD 16MM - OD 200MM
FAQ

SCM420H — frequently asked questions

What is the equivalent of SCM420H?
Common equivalents include 18CRMO4. Standards: Indian IS: 20Cr4Mo2; European EN: 18CrMo4 (EN 10084); Germany DIN: 18CrMo4 / 20CrMo5; Japan JIS: SCM420H / SCM420 (JIS G4052); UK (BS): 708M20; USA (SAE / AISI): SAE 4118H / SAE 4120.
Which forms of SCM420H are available?
SCM420H is available as ROUND BAR.
Where can I buy SCM420H Alloy Steel in Mumbai or across India?
C P Steel Suppliers supplies SCM420H Alloy Steel from Mumbai. Contact us with your size and quantity to confirm availability and delivery.

Interested in Alloy Steel SCM420H?

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