SAE 1030 carbon steel

Introduction

We manufacture forging ingots, billets, and blooms in carbon steel specifically for SAE 1030, designed for low to medium strength engineering applications where good toughness, machinability, and formability are required.

SAE 1030 is a low-medium carbon, unalloyed steel with a carbon content around 0.30%. It offers moderate strength and good ductility, making it suitable for general fabrication, machining, and moderate load-bearing components in automotive, agricultural, and light engineering uses.

Chemical composition

Element Content (%) Function / effect
Carbon (c) 0.27 – 0.34 Provides moderate strength and ductility
Manganese (mn) 0.60 – 0.90 Improves toughness and hardenability
Phosphorus (p) 0.040 max Controlled to prevent brittleness
Sulphur (s) 0.050 max Improves machinability when controlled
Silicon (si) 0.15 – 0.35 Acts as deoxidizer and improves strength
Chromium (cr) Nil Not intentionally added
Nickel (ni) Nil Not present
Molybdenum (mo) Nil Not present
Other elements — No significant alloying additions

Mechanical properties (typical – normalized / annealed condition)

  • Tensile strength: 440 – 580 MPa
  • Yield strength: 270 – 350 MPa
  • Elongation: 22 – 28 %
  • Hardness: 120 – 160 HB

Heat treatment

  • Annealing: improves softness and machinability
  • Normalizing: refines grain structure and improves mechanical properties
  • Quenching & tempering: improves strength and toughness (limited due to lower carbon)

Key features and benefits

  • Good ductility and formability
  • Suitable for moderate load applications
  • Cost-effective and easily available
  • Good machinability in annealed condition
  • Ideal for fabrication and welding

Typical applications

  • General fabricated parts
  • Automotive and agricultural components
  • Shafts, pins, and spindles
  • Machine components
  • Light engineering structures

Equivalent steel grades

  • IS (Indian standard): 2062 Gr. B / 2062 E250A (similar carbon content)
  • EN (European standard): C30 / C30E / C30D
  • AISI/SAE (American standard): SAE 1030
  • JIS (Japanese industrial standard): S30C

Why Choose SAE 1030 For Your Application?

SAE 1030 Is An Excellent Choice For Applications Requiring Moderate Strength And Good Machinability. Its Ability To Be Heat Treated Allows Flexibility In Achieving Desired Mechanical Properties, Making It Suitable For A Wide Range Of Engineering And Automotive Uses.

Comparison Table For Similar Grades

Grade Carbon (%) Key Applications Heat Treatment Comments
SAE 1030 0.28 – 0.34 Shafts, Gears Q&T / Normalized Balanced properties
EN C30 (1.0528) 0.27 – 0.34 Engineering parts Q&T Closest equivalent
DIN 1.0528 0.27 – 0.34 Automotive parts Q&T German equivalent
JIS S30C ~ 0.27 – 0.34 Machine components Q&T Japanese equivalent

Summary

SAE 1030 is a low to medium carbon steel offering good toughness, formability, and machinability for general engineering applications. It is a cost-effective material for moderate load parts, while 42CrM04 allows you to step up to higher performance where required.