ASTM A36 Steel Density & Weight Reference: All Units, Equivalents & Plate Specs

ASTM A36 Steel Density — Quick Answer

The density of ASTM A36 steel is 7.85 g/cm³ (7850 kg/m³).

All unit conversions:

• g/cm³: 7.85
• kg/m³: 7,850
• lb/in³: 0.284
• lb/ft³: 490
• lb/yd³: 13,230

This density value applies to all A36 steel products: plate, bar, beam, channel, and structural shapes.

Esta guía incluye ASTM A36 steel density, equivalent grades (S235JR, SS400, Q235B), chemical composition, mechanical properties, and applications , helping buyers and engineers quickly compare materials and select the right option for international projects.

For sourcing and specification matching, understanding A36 equivalent material and performance differences is essential in global steel procurement.

Índice

• Materiales equivalentes
• Density of A36 Steel
• Composición química
• Propiedades mecánicas
• Dimensiones y peso comunes
• Aplicaciones prácticas
• PREGUNTAS FRECUENTES

ASTM A36 Equivalent Grades (S235JR, SS400, Q235B) – Comparison Guide

Los compradores internacionales de acero suelen comparar ASTM A36 equivalent grades to ensure material interchangeability and compliance with local standards.

Estándar	Grado equivalente	Notas
ASTM (EE.UU.)	A36	Referencia de base
ES (Europa)	S235JR	Prestaciones muy similares, a menudo intercambiables
JIS (Japón)	SS400	Límite elástico ligeramente inferior; comprobar los requisitos del proyecto
GB (China)	Q235B	Equivalente común en chino

In global sourcing, ASTM A36 equivalent material selection depends on project standards, cost targets, and availability.

• S235JR is the closest equivalent to ASTM A36 in yield strength and is widely accepted in European projects.
• SS400 is commonly used in Asia, with slightly lower yield strength, suitable for general structures.
• Q235B is a cost-effective alternative frequently used in China and export markets.

When strict compliance or certification is required, ASTM A36 should be specified directly. For cost-sensitive procurement, A36 equivalent grades are often accepted after technical review.

ASTM A36 Steel Density — Complete Unit Reference

The density of ASTM A36 steel is 7,85 g/cm³, consistent across all product forms including plate, coil, bar, and structural profiles.

A36 Steel Density in All Units

Unit System	Density Value
g/cm³ (metric)	7.85
kg/m³ (metric)	7,850
lb/in³ (imperial)	0.284
lb/ft³ (imperial)	490
lb/yd³ (imperial)	13,230
tonnes/m³	7.85

Why A36 Density Matters for Procurement

Knowing the exact A36 steel density is essential for:

1. Weight calculation before ordering
Use the formula: Peso (kg) = Longitud (m) × Anchura (m) × Espesor (mm) × 7,85

Por ejemplo: A 2000mm × 1000mm × 10mm A36 plate weighs: 2 × 1 × 10 × 7.85 = 157 kg

→ Use our Steel Plate Weight Calculator (kg, lb, tonne) for instant results.

2. Freight cost estimation
International shipping charges are weight-based. Accurate density input prevents costly miscalculations on FOB or CIF quotes.

3. Structural load calculations
Engineers use A36 density to calculate dead loads in beams, columns, and platforms.

A36 Steel Density vs Other Common Grades

Grado de acero	Density (g/cm³)	Comparison to A36
ASTM A36	7.85	Baseline
S235JR (A36 equivalent)	7.85	Identical
SS400 (A36 equivalent)	7.85	Identical
Q235B (A36 equivalent)	7.85	Identical
ASTM A572 Grado 50	7.85	Identical
Stainless Steel 304	7.93	+1% heavier
Aluminum 6061	2.70	66% lighter

All carbon and low-alloy structural steels share the same density of 7.85 g/cm³. Grade selection should be based on strength and weldability, not density differences.

For a broader comparison across popular carbon steel plates, see also: Placa de acero A36 vs A283 vs A572 vs A516: Principales diferencias y equivalencias

ASTM A36 Composición química

El típico Composición química del acero A36 garantiza tanto la resistencia como una excelente soldabilidad, lo que lo convierte en uno de los grados preferidos en la categoría de aceros al carbono.

Elemento	Contenido (%)
Carbono (C)	≤ 0.25
Manganeso (Mn)	0.80 - 1.20
Fósforo (P)	≤ 0.04
Azufre (S)	≤ 0.05
Silicio (Si)	0.15 - 0.40

*The low carbon content (<0.25%) in ASTM A36 steel significantly enhances weldability, while manganese (0.80–1.20%) increases tensile strength without compromising ductility. These factors make the ASTM A36 chemical composition highly suitable for structural fabrication.

Propiedades mecánicas de la chapa de acero ASTM A36

En A36 steel properties lo convierten en una opción versátil y rentable para fines estructurales y de fabricación:

Propiedad	Valor
Resistencia a la tracción	400 - 550 MPa
Límite elástico	≥ 250 MPa
Alargamiento	≥ 20%

*Estos Propiedades del acero ASTM A36 garantizar que se pueda soldar, mecanizar y conformar fácilmente. El límite elástico de Chapa de acero A36 permite un rendimiento fiable en vigas, canales y plataformas. Su equilibrio mecánico admite una amplia gama de aplicaciones en las que se requiere tenacidad y ductilidad.

Aplicaciones prácticas de la chapa de acero ASTM A36

1. Construcción e infraestructuras

• Used for beams, columns, platforms, brackets, and flooring.
• Placa de acero cuadriculada A36 se prefiere para suelos por su superficie antideslizante.
• Canal en U de acero al carbono A36, Canal C de acero al carbono A36y Viga en I de acero al carbono A36 soportar eficazmente los marcos estructurales.

2. Construcción naval y estructuras offshore

Chapas de construcción naval A36 son adecuados para cubiertas secundarias y estructuras no críticas. Para los cascos principales, se prefieren los grados de alta resistencia o resistentes a la corrosión.

3. Maquinaria y equipos industriales

• Los tanques, las bases de los equipos y los componentes fabricados utilizan Placa de acero al carbono A36 y Bobina de acero al carbono A36.
• Barra redonda de acero A36 se suministra para ejes y fijaciones.

PREGUNTAS FRECUENTES

• Q1: What is the density of A36 steel in lb/in³?
  The density of ASTM A36 steel is 0.284 lb/in³ (equivalent to 7.85 g/cm³ or 490 lb/ft³).
• Q2: What is the density of A36 steel in kg/m³?
  ASTM A36 steel density is 7,850 kg/m³.
• Q3: Is the density of A36 steel the same as mild steel?
  Yes. ASTM A36 is a mild steel grade, and its density of 7.85 g/cm³ is the standard value for all mild and low-carbon structural steels, including S235JR, SS400, and Q235B.
• Q4: What is ASTM A36 equivalent material?
  ASTM A36 equivalent material includes EN S235JR, JIS SS400, and GB Q235B. These grades have similar chemical composition and mechanical properties and are widely used as substitutes in international projects, depending on local standards and availability.
• Q5: Is ASTM A36 the same as S235JR?
  ASTM A36 and S235JR are not identical but are considered very close equivalents. Both have similar yield strength (around 235–250 MPa) and are commonly interchangeable in structural applications after engineering confirmation.
• Q6: Is A36 steel the same as Q235B?
  A36 steel and Q235B are similar structural carbon steels, but they follow different standards (ASTM vs GB). Q235B is often used as a cost-effective alternative to A36 in global procurement, especially for general construction.
• Q7: Is ASTM A36 equivalent to SS400?
  Yes, SS400 is a commonly accepted equivalent to ASTM A36. However, SS400 may have slightly lower yield strength, so it is typically used for general structural applications rather than critical load-bearing structures.

Conclusión

ASTM A36 steel sigue siendo uno de los materiales más versátiles y económicos para proyectos estructurales globales. Su equilibrado A36 steel propertiesamplia disponibilidad y compatibilidad con múltiples A36 material equivalent hacen de ella una elección fiable para ingenieros y fabricantes de todo el mundo.

For international projects, choosing the right ASTM A36 steel or its equivalent depends on availability, standards, and cost considerations.

We supply export-ready A36 steel plates with flexible sizing, third-party inspection, and global delivery support.

Feel free to contacte con nuestro equipo de apoyo.