Difference Between Boiler Plate and Mild Steel Plate

Shiv Shakti Steel

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Steel plates play a crucial role in various industries, and two commonly used types are boiler plates and mild steel plates. Understanding the difference between boiler plate and mild steel plate is essential for selecting the right material for industrial applications. While both plates serve structural purposes, their properties, cost, and uses differ significantly.

At Shiv Shakti Steel & Metal, we provide high-quality steel plates, including boiler plate steel and mild steel plates, catering to diverse industrial requirements. Let’s explore the key differences between these two steel types, their specifications, boiler plate cost, and applications.

What is Boiler Plate Steel?

Boiler plate steel is a type of high-strength steel designed specifically for use in pressure vessels, boilers, and high-temperature environments. It is manufactured according to stringent standards to ensure durability, heat resistance, and high-pressure endurance.

Features of Boiler Plate Steel:

  • High-Temperature Resistance – Suitable for extreme heat applications.

  • High Tensile Strength – Withstands high-pressure conditions.

  • Excellent Weldability – Ideal for fabrications.

  • Corrosion Resistance – Reduces wear and tear in harsh environments.

  • Compliance with Industrial Standards – Manufactured under ASTM, ASME, and other certifications.

Grades of Boiler Plate Steel:

  • ASTM A516 Grade 70 Plate – The most widely used boiler plate steel.

  • IS 2002 Boiler Plate – Used in pressure vessels.

  • SA 516 Grade 60 & 65 Plates – Available for different strength requirements.

Equivalent SA Boiler Steel 516 Grade 70 Plate

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Boiler SA 516 GR.70N Nace Plates

What is Mild Steel Plate?

Mild steel plates are low-carbon steel plates known for their versatility, affordability, and ease of fabrication. These plates are widely used in structural applications, general construction, and automotive industries.

Features of Mild Steel Plate:

  • Low Carbon Content – Makes it highly machinable and ductile.

  • Good Weldability – Suitable for structural fabrication.

  • Cost-Effective – More affordable than boiler plate steel.

  • Moderate Strength – Ideal for general-purpose applications.

  • Surface Finish Flexibility – Can be coated or galvanized.

Grades of Mild Steel Plate:

  • IS 2062 Grade A & B – Standard mild steel plate grades.

  • EN 10025 S235JR Plate – Used in construction projects.

Mild Steel Plate Supplier

Boiler Plate vs. Mild Steel Plate Differences

PropertyBoiler Plate SteelMild Steel Plate
StrengthHigher tensile strengthLower tensile strength
Corrosion ResistanceHighModerate
Heat ResistanceExcellentLow
WeldabilityHighHigh
CostHigher (Boiler Plate Cost varies by grade & thickness)Lower
ApplicationsBoilers, pressure vessels, oil & gas industryConstruction, fabrication, automotive

Chemical Properties of Boiler Plate Steel vs. Mild Steel Plate

ElementBoiler Plate Steel (%)Mild Steel Plate (%)
Carbon (C)0.20 – 0.300.15 – 0.25
Manganese (Mn)0.85 – 1.600.60 – 1.20
Phosphorus (P)0.035 max0.040 max
Sulfur (S)0.035 max0.040 max
Silicon (Si)0.10 – 0.450.10 – 0.35

Mechanical Properties of Boiler Plate Steel vs. Mild Steel Plate

PropertyBoiler Plate SteelMild Steel Plate
Tensile Strength (MPa)485 – 620340 – 450
Yield Strength (MPa)260 min250 min
Elongation (%)17 min20 min
Impact StrengthHighModerate

Boiler Plate Cost vs. Mild Steel Plate Cost

The cost of boiler plate steel varies based on thickness, grade, and supplier. Boiler plate cost is generally higher due to its superior properties and industrial applications. In contrast, mild steel plate is more affordable and widely available for general use.

Affecting Boiler Plate Cost:

  • Grade & Thickness – Higher grades and thicker plates cost more.

  • Market Demand & Supply – Prices fluctuate based on availability.

  • Certification & Standards – Plates meeting ASTM/ASME standards cost more.

Specifications of Boiler Plate Steel & Mild Steel Plate

SpecificationBoiler Plate SteelMild Steel Plate
StandardASTM A516, ASME SA516, IS 2002IS 2062, EN 10025
Thickness6mm – 150mm3mm – 100mm
Width1500mm – 3500mm1000mm – 3000mm
Length3000mm – 12000mm2000mm – 9000mm
Surface FinishCoated/UncoatedCoated/Uncoated

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SA Boiler Steel 516 Grade 70 Plate We Supply Globally:

We Supply Our Boiler Steel 516 Grade 70 Plate to various cities like Faridabad, Jaipur, Chandigarh, Hyderabad, Navi Mumbai, Jamshedpur, Indore, Ludhiana, Abu Dhabi, Noida, Visakhapatnam, Kanpur, New Delhi, Pune, Bengaluru, Howrah, Surat, Kolkata, Thiruvananthapuram, Gurgaon, Ranchi, Baroda, Chennai, Ahmedabad, Haryana, Nagpur, All Over India.

SA Boiler Steel 516 Grade 70 Plate We Supply Worldwide:

We Supply Our Boiler Steel 516 Grade 70 Plate to various cities like Abu Dhabi, Toronto, Thane, Tehran, Aberdeen, Edmonton, Cairo, Hong Kong, Mexico City, Port-of-Spain, Moscow, Ho Chi Minh City, Chiyoda, Sydney, Doha, Ahvaz, Muscat, Lagos, Hanoi, London, Geoje-si, Ernakulam, Istanbul, Lahore, Rio de Janeiro, Houston, New York, Coimbatore, Pimpri-Chinchwad, La Victoria, Bangkok, Kuala Lumpur, Seoul, Santiago, Dallas, Gimhae-si, Nashik, Kuwait City.

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