En16 alloy steel

Introduction

we manufacture forging ingots, billets, and blooms in alloy steel specifically for En16, tailored for high-performance applications.

En16 is a medium carbon, manganese-molybdenum alloy steel known for its good strength, toughness, and excellent response to heat treatment . The higher manganese content improves hardenability and toughness, making En16 suitable for engineering applications that require a balance of strength, ductility, and wear resistance. This grade is commonly used for forged and machined components subjected to moderate to high mechanical loads.

Chemical composition

Element	Content (%)	Function / effect
Carbon (c)	0.30 – 0.40	Provides strength and moderate hardness
Manganese (mn)	1.30 – 1.80	Improves hardenability, strength, and toughness
Sulphur (s)	Max 0.050	Impurity; controlled for machinability
Phosphorus (p)	Max 0.050	Impurity; low content improves toughness
Silicon (si)	0.10 – 0.35	Increases strength and elasticity
Chromium (cr)	Nil	Not present
Nickel (ni)	Nil	Not present
Molybdenum (mo)	0.20 – 0.35	Improves hardenability, strength, and toughness

Mechanical properties (typical values after heat treatment )

• Tensile strength:  approx. 700 – 950 MPa
• Yield strength:  approx. 450 – 650 MPa
• Hardness:  22 – 32 hrc (adjustable by heat treatment )
• Impact toughness:  good
• Fatigue resistance:  good

Heat treatment

• Annealing:  used to soften the steel and improve machinability
• Normalizing:  refines grain structure and improves Mechanical properties
• Quenching:  heating to approx. 830 – 860°c followed by oil or water quenching
• Tempering:  reheating to relieve internal stresses and achieve required toughness

Heat treatment  can be optimized based on application requirements.

Key features and benefits

• Good balance of strength and toughness
• High manganese content provides better hardenability
• Good machinability in annealed condition
• Good wear resistance for general engineering applications
• Dimensional stability after heat treatment
• Suitable for forging and machining operations

Typical applications

• Shafts, axles, and pins
• Gears and general engineering components
• Forged parts subjected to moderate loads
• Automotive and industrial machinery components
• Structural parts requiring good toughness

Equivalent steel gades

• En16 (bs 970):  british standard
• AISI  1541:  approximate american equivalent
• Din 1.1191:  comparable german grade

Why choose En16 for your application?

En16 provides a cost-effective solution where moderate to high strength and good toughness are required. Its high manganese content ensures good hardenability, making it suitable for a wide range of general engineering and automotive applications.

Comparison table for similar grades

Grade	Carbon (%)	Key applications	Heat treatment	Comments
En16	0.30-0.40	Shafts, gears, engineering parts	Q & t / normalizing	Good strength and toughness
En15	0.30-0.40	General engineering	Normalizing	Lower alloy content
En19	0.35-0.45	Heavy-duty shafts and gears	Quenching & tempering	Higher strength

Summary

En16 is a medium carbon manganese-molybdenum alloy steel designed for general engineering applications. It offers reliable mechanical performance, good toughness, and excellent machinability, making it a practical choice for forged and machined components.