What products does Kesari Alloys manufacture?

Kesari Alloys manufactures alloy steel Forging ingots, billets, blooms and rolled bars for forging, engineering and industrial applications.

Where is Kesari Alloys located?

Kesari Alloys Private Limited is located in Bhiwadi, Rajasthan, India.

Is Kesari Alloys an ISO certified manufacturer?

Yes, Kesari Alloys follows strict quality systems and international manufacturing standards for steel production.

What is the chemical composition of 42Crm02 alloy steel?

42Crm02 alloy steel typically contains: Carbon (c) 0.38 - 0.45, Manganese (Mn) 0.60 - 0.90, Silicon (si) 0.15 - 0.40, Chromium (cr) 0.90 - 1.20, Molybdenum (mo) 0.15 - 0.30, Phosphorus (p) Max 0.035, Sulphur (s) Max 0.035.

What are the typical applications of 42Crm02 alloy steel?

Typical applications of 42Crm02 alloy steel include: heavy duty shafts and axles, gears and pinions in transmission systems, crankshafts and connecting rods, high-strength fasteners and bolting applications, forged components for automotive and industrial machinery, pressure and power transmission components.

What are the mechanical properties of 42Crm02 alloy steel?

Key mechanical properties of 42Crm02 alloy steel include: Tensile strength: 900 - 1100 MPa; Yield strength: 700 - 900 MPa; Hardness: 28 - 36 HRC (customizable); Impact toughness: High; Fatigue resistance: Excellent.

42Crm02 alloy steel

Introduction

We manufacture forging ingots, billets, and blooms in alloy steel specifically for 42Crm02, tailored for high-performance engineering and forging applications. 42Crm02 is a medium carbon, chromium-molybdenum alloy steel known for its high strength, excellent toughness, and superior fatigue resistance. It is specially designed for components subjected to high stress, shock loading, and cyclic operating conditions.

The addition of chromium improves hardenability and wear resistance, while molybdenum enhances high-temperature strength and prevents temper brittleness. 42Crm02 also provides good machinability in the annealed condition and maintains dimensional stability after heat treatment, making it ideal for heavy-duty industrial applications.

This steel offers an excellent combination of strength, durability, and reliability, making it a preferred choice for critical engineering components.

Chemical composition

Element	Content (%)	Function / effect
Carbon (c)	0.38 - 0.45	Provides hardness and tensile strength
Manganese (Mn)	0.60 - 0.90	Improves hardenability and toughness
Silicon (si)	0.15 - 0.40	Increases strength and elasticity
Chromium (cr)	0.90 - 1.20	Improves hardenability and wear resistance
Molybdenum (mo)	0.15 - 0.30	Enhances high-temperature strength and fatigue resistance
Phosphorus (p)	Max 0.035	Impurity; lower content improves toughness
Sulphur (s)	Max 0.035	Impurity; controlled content improves machinability

Mechanical properties

(Properties may vary depending on section size and heat treatment conditions)

Tensile strength: 900 - 1100 MPa
Yield strength: 700 - 900 MPa
Hardness: 28 - 36 HRC (customizable)
Impact toughness: High
Fatigue resistance: Excellent

Heat treatment

annealing: used to soften the steel for improved machinability and stress relief.
quenching: heating to approximately 830 - 870°c followed by rapid cooling to achieve high hardness and strength.
tempering: reheating at controlled temperature to relieve internal stresses and improve toughness while maintaining required hardness.

The heat treatment parameters can be adjusted to achieve optimum performance based on application requirements.

Key features and benefits

through hardening capability: uniform hardness throughout the section
high strength and toughness: suitable for heavy load and impact conditions
excellent fatigue resistance: ideal for dynamic and cyclic applications
good wear resistance: extends component service life
good machinability in annealed condition: facilitates manufacturing
dimensional stability after heat treatment
suitable for forging and heavy engineering applications

Typical applications

heavy duty shafts and axles
gears and pinions in transmission systems
crankshafts and connecting rods
high-strength fasteners and bolting applications
forged components for automotive and industrial machinery
pressure and power transmission components

Equivalent steel grades

42Crm02 has several international near equivalents, including:

42CrMo4 (EN 10083-3) – closely related european alloy steel
EN19 (BS standard) – common engineering alloy steel
AISI 4140 – american standard chromium-molybdenum steel

Why choose 42Crm02 for your application?

42Crm02 provides an excellent balance of high strength, toughness, and fatigue resistance. Its good hardenability allows uniform Mechanical properties throughout the component. Additionally, its reliable heat treatment response and machinability help reduce manufacturing costs while ensuring long service life in critical applications.

Comparison table for similar grades

Grade	Carbon (%)	Key applications	Heat treatment	Comments
42Crm02	0.38 - 0.45	Shafts, gears, heavy engineering parts	Quenching & tempering	High strength and fatigue resistance
42CrMo4	0.38 - 0.45	Automotive and machinery components	Quenching & tempering	Widely used equivalent grade
EN19	0.36 - 0.44	General engineering and shafts	Quenching & tempering	British standard alloy steel
AISI 4140	0.38 - 0.43	Automotive, oil & gas, machinery	Quenching & tempering	Popular american equivalent

Summary

42Crm02 is a high-performance chromium-molybdenum alloy steel designed for through hardening applications in heavy engineering and automotive industries. It provides excellent mechanical strength, reliability, and durability for high-stress components.