Carbon Steel vs Mild Steel

Table of Content

 

 

carbon steel vs mild steel

Carbon content of mild steel vs carbon steel

Mild steel Carbon steel
Between 0.16% and 0.29%
  • Low = 0.25%
  • Medium = 0.25–0.5%
  • High = 0.5–1.25%

 

Carbon steel types

Carbon Content Characteristics
Low carbon steel Less than 0.25 Ferrite
Medium carbon steel 0.25 to 0.60 Martensite
High carbon steel 0.60 to 1.25 Pearlite

 

Carbon steel vs mild steel density

Mild steel Carbon steel
7.85 g/cm3 7.84 g/cm3

 

Melting point of CS & MS

Mild steel Carbon steel
1350-1530°C 1410°C (2570°F)

 

Heat capacity of carbon steel vs mild steel

Metal J/(g-°C) Btu/(lb-°F)
Mild Steel 0.5107896 0.122
Carbon Steel 0.502416 0.120

 

Mild steel & carbon steel heat treatment temperature

Mild steel Carbon steel
850°C 815° C

 

Carbon steel vs mild steel chemical composition

Material Carbon Steel Mild Steel
Carbon 0.6-1.5% 0.16-0.18%
Silicon 0.15-0.3% 0.40% Maximum
Manganese 0.15-0.35% 0.70-0.90%
Chromium 0.2% –
Sulphur – 0.040% Maximum
Phosphorus – 0.040% Maximum

 

Mechanical properties of carbon steel vs mild steel

Property Carbon Steel Mild Steel
Hardness 163 – 600 (Brinell) 105 (HV)
Tensile Strength 161-3200MPa 485 N/mm²
Yield Strength 275-3340MPa 345 N/mm²
Elongation 0.500 – 30.0 % 20%
Modulus of Elasticity 13.8-235GPa 190-210 GPa

 

Carbon steel vs. mild steel corrosion

Mild steel vs carbon steel: what is the difference?

Comparison Carbon Steel (CS) Mild Steel (MS)
Weldability Generally not suitable Good
Cost High Low
Carbon Content Medium to Ultra-High Low
Cost High Low
Ductility Low High
Corrosion resistance Poor Poor

 

Manufacturing process of carbon steel and mild steel

  • Casting
  • Secondary
  • Primary

Finishing processes of MS and CS

  • Rolling
  • Surface treatment
  • Heat treatment
  • Downstream secondary processing

Carbon steel & mild steel advantages

Carbon Steel Mild Steel
High Cost Low cost
High carbon content Ease fabrication
20% stronger than mild steel Good machinability
High strength applications Low stress applications

 

Plain carbon steel vs. mild steel

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