Reliable ASTM A615 Grade 40 rebar for medium-strength concrete structures

Product Overview – ASTM A615 Grade 40 Rebar

ASTM A615 Grade 40 rebar is a carbon steel reinforcing bar used to improve the tensile strength and structural integrity of concrete elements. Compared with higher grades such as ASTM A615 Grade 60 or ASTM A615 Grade 75, Grade 40 offers easier workability and bending performance, making it ideal for small to medium structural applications.

This grade is widely specified in residential buildings, light commercial projects, pavements, bridges, and concrete slabs where moderate tensile strength is sufficient. As a China ASTM A615 concrete rebar Grade 40 supplier, CJM provides standard lengths, custom cutting, and export-ready bundles for global construction markets.

Key Features

• Standard: ASTM A615 / A615M
• Grade: 40
• Material: Carbon steel (plain or deformed)
• Tensile Strength: 420 MPa (min)
• Yield Strength: 280 MPa (min)
• Application: Reinforcement for concrete slabs, beams, walls, columns
• Form: Straight bars or coils

ASTM A615 Grade 40 Chemical Composition

Element	Composition (%)
Carbon (C)	≤ 0.30
Manganese (Mn)	≤ 1.50
Phosphorus (P)	≤ 0.050
Sulfur (S)	≤ 0.060

ASTM A615 Grade 40 chemical composition ensures a balance between ductility and strength, making it suitable for easy bending and cutting during construction.

👉 For detailed comparison of all grades, see Understanding ASTM A615 Rebar.

Mechanical Properties

Property	Requirement
Yield Strength	280 MPa (min)
Tensile Strength	420 MPa (min)
Elongation	≥ 12%

These properties provide dependable tensile reinforcement to resist cracking, deformation, and collapse under load-bearing conditions.

Dimensions and Weight Chart

Diameter (mm)	Length (m)	Weight (kg/m)	Bundle Weight (kg)
8	12	0.395	990
10	12	0.617	999
12	12	0.888	960
16	12	1.578	969
20	12	2.466	953
25	12	3.853	941
32	12	6.313	969
40	12	9.865	1246

Custom diameters and cutting lengths available upon request.

Applications of ASTM A615 Grade 40 Rebar

A615 Grade 40 rebar is widely used in:

• Concrete slabs and pavements
• Residential and commercial buildings
• Bridge decks and retaining walls
• Roadways, railways, and light infrastructure projects

👉 For practical construction guidance, see our related post: Rebar Applications in Concrete Construction.

Why Choose CJM Steel

• Export-ready rebar with mill test certificates (MTC)
• Flexible MOQ for contractors and distributors
• Consistent quality from certified Chinese mills
• Timely delivery for ongoing construction projects

Packaging & Delivery

• Each ASTM A615 Grade 40 rebar bundle is securely tied with steel straps, labeled by size, and loaded in containers suitable for export.
• Typical delivery time: 15–25 days depending on order quantity.

Q: What is your company’s main products/services?

A: We are a professional manufacturer for Carbon Steel, Alloy Steel and Profile products. We have the experience of steel business for more than 10 years and our products are exported to Mid East,South America,Southeast Asia,Africa,South and East Asia etc.

Q: Can I go to your factory for a visit?

A: Of course, we welcome customers from all over the world to visit our factory.

Q: What are your terms of payment?

A: 30% T/T deposite and 70% balance before shipment.

Q: What is your delivery time?

A: For stocks,we could transport the goods to loading port within 7 days after we received the deposit; For production,it usually takes about 15-30 days after receiving the deposit.

Q: Do you provide samples? Are they free or paid?

A: Samples are available for free,but the courier freight will be covered by customer account.

Q: Do you accept the third party inspection?

A:Yes, we fully accept ‌third-party inspections.

Q: Why should I buy from you not from other suppliers?

A: Integrating the superior resources of China’s steel industry, we provide customers with high-quality steel products at preferential prices, and can ensure that the goods are delivered to customers in a timely manner.

Q:How can you guarantee quality?

A: Always a pre-production sample before mass production;Always 100% inspected before shipment