28.06.2025 by admin

EN15 vs. EN18: Which Works Better for Forged Components?

EN15 and EN18 are alloy steels commonly used for forged components requiring toughness, strength, and wear resistance. Understanding their differences helps manufacturers select the best steel for forging applications.

Overview of EN15 and EN18

  • Both steels have chromium and nickel alloys.
  • EN18 typically has higher carbon content.
  • Both suitable for heat treatment and forging.

Chemical Composition Comparison

ElementEN15 (%)EN18 (%)
Carbon (C)0.34 – 0.400.35 – 0.45
Chromium (Cr)0.80 – 1.100.80 – 1.10
Nickel (Ni)1.50 – 2.001.30 – 1.80
Manganese (Mn)0.40 – 0.700.40 – 0.70

Mechanical Properties

PropertyEN15EN18
Tensile Strength (MPa)650 – 850750 – 900
Yield Strength (MPa)370 – 550450 – 650
Hardness (HB)200 – 260220 – 280
Elongation (%)12 – 1810 – 15

Forging Applications

  • EN15: Suitable for automotive parts, general forgings, shafts.
  • EN18: Preferred for high-strength forged components, heavy-duty shafts, and industrial gears.

Table: Selecting Between EN15 and EN18

FactorEN15EN18
Carbon ContentLower, better machinabilityHigher, better hardness
Strength RequirementModerate to highHigher strength needed
Forging ComplexityEasier forgingRequires precise control
CostGenerally lower costSlightly higher cost

Summary

Choosing between EN15 and EN18 depends on the strength, hardness, and cost requirements of the forged component. EN18 suits higher strength demands, while EN15 offers good toughness and machinability. Indian suppliers like Dhand Steels provide both grades with quality certifications for reliable forging supply.