Table of Contents
- Introduction
- Chemical Composition
- Mechanical Properties
- Physical & Thermal Properties
- Equivalent Grades
- ERW Pipes Details
- Manufacturing Process
- Sizes & Dimensions
- Weight Chart
- Pressure Rating
- Types Available
- Applications
- Industries Served
- Grade Comparison
- Why BB Infras?
- Certifications & QC
- Export & Packaging
- ERW Pipes Marking
- Coating Options
- Testing Procedure
- Storage Guidelines
- Downloads
- Cities We Supply
- Countries We Export
- FAQ
- People Also Ask
- Related Products
| Material | Low Carbon Steel |
| Grade | AISI 1018 / AISI/SAE 1018 |
| Standard | AISI/SAE 1018 |
| Pipe Type | ERW |
| Size Range | Rounds Ø 6–150 mm; bright drawn bar |
| Schedule | SCH 10 – XXS (per ASME B36.10M) |
| Length | SRL (3–5 m) / DRL (6–12 m) / Cut-to-length |
| End Finish | Plain End (PE) / Bevel End (BE) / Threaded (TE) |
| Tensile Strength | 440 MPa |
| Yield Strength | 370 MPa |
| MTC | EN 10204 3.1 Mill Test Certificate |
| MOQ | 100 kg (standard sizes) |
Quick Answers
AISI 1018 ERW Pipes – Overview
AISI 1018 is a fine-grained low-carbon steel with superior case-hardening response compared to 1020. Its higher manganese (0.60–0.90%) gives better surface hardness after carburising, making it the preferred grade for precision-machined case-hardened components.
BB Infras stocks AISI 1018 ERW Pipes in rounds, hexagonals and profiles from leading Indian and European mills, regularly supplied to gear manufacturers, machine builders and automotive component suppliers with hardness and impact test reports on request. We supply AISI 1018 ERW Pipes in schedules SCH 10 through XXS, in lengths from 3 m single random to 6 m double random, with plain end, bevel end or threaded end as required. PE/BE/TE pipes are stocked for same-day dispatch.
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Request Quote WhatsAppChemical Composition of AISI 1018
The following table shows the chemical composition per AISI/SAE 1018.
| C | Mn | P | S |
|---|---|---|---|
| 0.15–0.20 | 0.60–0.90 | ≤ 0.040 | ≤ 0.050 |
Mechanical Properties of AISI 1018
| Property | Value |
|---|---|
| Tensile Strength | 440 MPa |
| Yield Strength | 370 MPa |
| Elongation | 15% |
| Reduction of Area | 40% |
| Hardness | 126 HB |
Physical & Thermal Properties
| Property | Value |
|---|---|
| Density | 7.87 g/cm³ |
| Melting Point | 1460–1520 °C |
| Thermal Conductivity | 51.9 W/m·K |
| Thermal Expansion | 11.7 × 10⁻⁶ /°C |
| Elastic Modulus | 205 GPa |
| Specific Heat | 486 J/kg·K |
| Electrical Resistivity | 0.159 μΩ·m |
Equivalent Grades of AISI 1018
| Standard Body | Equivalent Grade |
|---|---|
| AISI | 1018 |
| EN/DIN | C15 / 1.0401 |
| JIS | S15C |
| BS | 040A15 |
| IS | 10C4 |
ERW Pipes – Product Details
Applicable Standards: ASTM A53, API 5L, IS 1239, IS 3589, EN 10217-1
Manufacturing Process: Cold forming of HR steel strip on a continuous forming mill, HF-ERW seam welding, external/internal bead removal, sizing and hydrostatic testing.
Heat Treatment: Carburise 900–930 °C; case harden; temper 150–200 °C.
AISI 1018 ERW Pipes – Manufacturing Process
ERW Pipes is produced using a controlled sequence of operations to achieve the dimensional and mechanical requirements of AISI/SAE 1018.
Internal & External
Per standard
AISI 1018 ERW Pipes – Sizes & Dimensions
Size range: Rounds Ø 6–150 mm; bright drawn bar. The following dimensional data covers standard sizes. Non-standard sizes available on request.
| NPS | OD (mm) | Min WT (mm) | Max WT (mm) |
|---|---|---|---|
| ½" | 21.3 | 2.0 | 4.0 |
| 1" | 33.4 | 2.6 | 5.0 |
| 2" | 60.3 | 2.9 | 5.5 |
| 4" | 114.3 | 3.6 | 8.6 |
| 6" | 168.3 | 4.5 | 11.0 |
| 8" | 219.1 | 5.0 | 12.7 |
| 12" | 323.9 | 6.4 | 12.7 |
AISI 1018 ERW Pipes – Weight Chart
Weight per metre (kg/m) for common sizes and schedules. Formula: W = 0.02466 × t × (OD − t) where t = wall thickness (mm), OD = outside diameter (mm).
| NPS | OD (mm) | SCH 40 WT (mm) | SCH 40 kg/m |
SCH 80 WT (mm) | SCH 80 kg/m |
SCH 160 WT (mm) | SCH 160 kg/m |
|---|---|---|---|---|---|---|---|
| ½" | 21.3 | 2.77 | 1.27 | 3.73 | 1.62 | 4.78 | 1.95 |
| ¾" | 26.7 | 2.87 | 1.69 | 3.91 | 2.20 | 5.56 | 2.90 |
| 1" | 33.4 | 3.38 | 2.50 | 4.55 | 3.24 | 6.35 | 4.24 |
| 1½" | 48.3 | 3.68 | 4.05 | 5.08 | 5.41 | 7.14 | 7.25 |
| 2" | 60.3 | 3.91 | 5.44 | 5.54 | 7.48 | 8.74 | 11.11 |
| 3" | 88.9 | 5.49 | 11.29 | 7.62 | 15.27 | 11.13 | 21.35 |
| 4" | 114.3 | 6.02 | 16.07 | 8.56 | 22.32 | 13.49 | 33.57 |
| 6" | 168.3 | 7.11 | 28.26 | 10.97 | 42.56 | 14.27 | 54.20 |
| 8" | 219.1 | 8.18 | 42.55 | 12.70 | 64.64 | 15.09 | 75.92 |
| 10" | 273.1 | 9.27 | 60.31 | 12.70 | 81.55 | 15.09 | 95.97 |
| 12" | 323.9 | 9.53 | 73.78 | 12.70 | 97.44 | 17.48 | 132.05 |
* Weights are approximate and calculated per ASME B36.10M. Actual weights may vary ±2% depending on mill tolerance.
AISI 1018 ERW Pipes – Pressure Rating
Allowable working pressure (bar) per ASME B31.3 at ambient temperature (38 °C). Pressure reduces at elevated temperature — consult ASME B31.3 Table A-1.
| NPS | OD (mm) | SCH 40 WT (mm) | SCH 40 Pressure (bar) |
SCH 80 WT (mm) | SCH 80 Pressure (bar) |
SCH 160 WT (mm) | SCH 160 Pressure (bar) |
|---|---|---|---|---|---|---|---|
| ½" | 21.3 | 2.77 | 462 | 3.73 | 622 | 4.78 | 797 |
| ¾" | 26.7 | 2.87 | 382 | 3.91 | 520 | 5.56 | 740 |
| 1" | 33.4 | 3.38 | 359 | 4.55 | 484 | 6.35 | 675 |
| 1½" | 48.3 | 3.68 | 271 | 5.08 | 374 | 7.14 | 525 |
| 2" | 60.3 | 3.91 | 230 | 5.54 | 326 | 8.74 | 515 |
| 3" | 88.9 | 5.49 | 219 | 7.62 | 304 | 11.13 | 445 |
| 4" | 114.3 | 6.02 | 187 | 8.56 | 266 | 13.49 | 419 |
| 6" | 168.3 | 7.11 | 150 | 10.97 | 232 | 14.27 | 301 |
| 8" | 219.1 | 8.18 | 133 | 12.70 | 206 | 15.09 | 245 |
| 10" | 273.1 | 9.27 | 121 | 12.70 | 165 | 15.09 | 196 |
| 12" | 323.9 | 9.53 | 105 | 12.70 | 139 | 17.48 | 192 |
* Pressures are indicative, calculated using Barlow's formula with 72% SMYS design factor. For engineering design, refer to ASME B31.3 / B31.1.
Types of AISI 1018 ERW Pipes
- Black ERW pipes
- Galvanised ERW pipes
- Pre-galvanised ERW
- Line pipe ERW (API 5L)
Applications of AISI 1018 ERW Pipes
Industries We Serve
Ready to order AISI 1018 ERW Pipes?
Stock available in Mumbai. Same-day quotation. Export documentation included.
Email Quote Call NowAISI 1018 – Grade Specification
| Standard | Category | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|---|
| AISI/SAE 1018 ✓ | Low Carbon Steel | 440 MPa | 370 MPa | 15% |
| AISI (1018) | Equivalent | See equivalent grades table above | ||
| EN/DIN (C15 / 1.0401) | Equivalent | See equivalent grades table above | ||
| JIS (S15C) | Equivalent | See equivalent grades table above | ||
| BS (040A15) | Equivalent | See equivalent grades table above | ||
| IS (10C4) | Equivalent | See equivalent grades table above | ||
* All values are minimum guaranteed per AISI/SAE 1018. Actual mill certificates may show higher values.
Why Buy AISI 1018 ERW Pipes from BB Infras?
| Ready Stock | Large inventory of AISI 1018 ERW Pipes in popular sizes maintained in our Mumbai warehouse for immediate dispatch. |
| Certified Material | All material supplied with EN 10204 3.1 Mill Test Certificates from NABL-accredited labs. TPI by SGS, BV, TUV on request. |
| Worldwide Export | We export AISI 1018 ERW Pipes to 80+ countries with complete export documentation — COO, packing list, B/L, fumigation certificates. |
| Competitive Pricing | Direct mill sourcing and bulk buying ensures competitive prices. No middlemen. Transparent pricing with no hidden charges. |
| Fast Delivery | Standard sizes dispatched within 3–5 business days. Custom sizes within 3–4 weeks. Urgent orders accommodated. |
| Value-Added Services | Cut-to-length, bevelling, threading, galvanising, painting, marking & stencilling available in-house. |
| Technical Support | Our metallurgical team assists with grade selection, standard interpretation, and material substitution queries. |
| MSME Registered | Registered MSME supplier. Eligible for GeM portal procurement and government tenders. |
Certifications & Quality Inspection
Every AISI 1018 ERW Pipes supplied by BB Infras undergoes the following quality controls:
Quality Inspection Checklist
- Chemical composition analysis (OES / wet analysis)
- Mechanical testing: tensile, yield, elongation, impact
- Dimensional inspection per applicable ASME standard
- Visual and surface finish inspection
- Hydrostatic or pneumatic pressure testing
- Non-Destructive Testing: UT, RT, MT, PT on request
- Positive Material Identification (PMI) on request
Export Packaging & MOQ
- Minimum Order Quantity (MOQ): 100 kg or 1 piece (standard sizes); 500 kg for custom sizes
- Packing for Pipes/Tubes: Bundled with steel strapping, plastic end caps, moisture-proof wrapping
- Packing for Fittings/Flanges: Wooden box / wooden pallet, plywood case for heavy items
- Sea Freight: FCL / LCL container, fumigation certificate provided
- Air Freight: Available for urgent requirements
- Documents: Commercial Invoice, Packing List, Certificate of Origin, MTC, Bill of Lading, Insurance Certificate
- Marking: Heat number, grade, size, schedule, standard per ASTM A5.40 / ASME marking requirements
ERW Pipes Marking & Identification
Every AISI 1018 ERW Pipes supplied by BB Infras is marked per AISI/SAE 1018 and ASME marking requirements. Standard marking sequence:
- Manufacturer name / mark — BB Infras or mill of origin
- Specification — AISI
- Grade — AISI 1018
- Type — E (ERW)
- Size & schedule — NPS × SCH or wall thickness
- Heat / lot number — for full traceability to MTC
- Length — actual pipe length in metres
- NDE symbol — if nondestructive examination was performed
Coating & Surface Finish Options
| Coating Type | Standard | Application | Lead Time |
|---|---|---|---|
| Black (Mill Finish) | Per standard | General service, indoor piping | In Stock |
| Hot-Dipped Galvanised (HDG) | ASTM A123 | Outdoor, water & plumbing | 3–5 days |
| Oil Coated | — | Export transit corrosion protection | In Stock |
| FBE (Fusion Bonded Epoxy) | CSA Z245.20 | Underground water/gas pipelines | 2–3 weeks |
| 3LPE (3-Layer Polyethylene) | DIN 30670 | Buried oil & gas pipelines | 2–3 weeks |
| Coal Tar Epoxy | AWWA C203 | Offshore & marine | 1–2 weeks |
Testing & Inspection Procedure
All AISI 1018 ERW Pipes supplied by BB Infras undergo a multi-stage inspection and testing process before dispatch:
| # | Test / Inspection | Standard / Method | Acceptance |
|---|---|---|---|
| 1 | Chemical Composition (OES) | ASTM E415 | Per AISI Table 1 |
| 2 | Tensile & Yield Strength | ASTM E8 | ≥440 MPa / ≥370 MPa |
| 3 | Elongation | ASTM E8 | ≥15% |
| 4 | Hardness (HB) | ASTM E10 | Per standard max |
| 5 | Hydrostatic Test | AISI / ASME B31.3 | Leak-free at test pressure |
| 6 | Dimensional Inspection | ASME B36.10M | Within tolerance |
| 7 | Visual & Surface | ASTM A530 / MSS SP-55 | Free from defects |
| 8 | Ultrasonic Testing (UT) | ASTM E213 (on request) | No sub-surface defects |
| 9 | PMI (XRF) | ASTM E1476 (on request) | Grade confirmation |
Storage & Handling Guidelines
- Store on wooden dunnage or pipe racks — never directly on concrete to avoid moisture-induced corrosion.
- Stack with appropriate separators; observe safe stack heights to prevent deformation.
- Apply plastic end caps or plugs to all open ends to prevent ingress of moisture, dust and insects.
- Keep material dry and ventilated; store under cover in humid or coastal climates.
- Use nylon slings or padded lifting hooks — never bare wire rope directly on surface.
- For long-term storage (>6 months), re-apply protective oil coating or wrap with VCI (Vapour Corrosion Inhibitor) film.
- Identify items with heat number tags throughout storage for full MTC traceability.
Downloads & Technical Resources
Request product documentation from our technical team. Available on enquiry:
Contact our technical team with your enquiry details and we will share the relevant document within 24 hours.
AISI 1018 ERW Pipes Supplier in India
BB Infras supplies AISI 1018 ERW Pipes to customers across India from our Mumbai stockyard. We serve all major industrial hubs — refineries in Jamnagar and Haldia, petrochemical clusters in Dahej and Panipat, shipyards in Kochi and Visakhapatnam, and fabrication workshops across Pune, Rajkot, Surat and Coimbatore — with same-day quotation and fast dispatch.
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AISI 1018 ERW Pipes Exporter – Countries We Ship To
BB Infras exports AISI 1018 ERW Pipes to 80+ countries with complete export documentation — Certificate of Origin, Material Test Certificate, Packing List, Bill of Lading and Fumigation Certificate. We are a trusted exporter to UAE, Saudi Arabia, Qatar, Oman and Kuwait in the Middle East; to Singapore, Malaysia, Indonesia and Vietnam in Southeast Asia; to South Africa, Nigeria and Kenya in Africa; and to the USA, UK, Germany and Netherlands in Europe and North America.
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Frequently Asked Questions
Get the best price for AISI 1018 ERW Pipes
Talk to our sales team — available Mon–Sat, 9 AM – 7 PM IST. Same-day quotes.
Contact Us Today +91-9152677155People Also Ask
Is AISI 1018 pipe seamless or welded?
AISI 1018 is available in both seamless and welded (ERW, SAW) forms under AISI/SAE 1018. BB Infras stocks seamless ERW Pipes and welded variants. Seamless offers higher burst pressure and superior fatigue resistance.
What schedules are available for AISI 1018 ERW Pipes?
Per ASME B36.10M: SCH 10, 20, 30, 40 (Standard), 60, 80 (Extra Strong), 100, 120, 140, 160 and XXS. BB Infras stocks SCH 40 and SCH 80 in popular sizes for immediate dispatch.
Can AISI 1018 pipe be hot-dip galvanised?
Yes. Galvanising per ASTM A123 is available. Galvanised AISI 1018 pipe is suitable for water supply, plumbing and outdoor structural applications. Specify HDG at time of enquiry.
What is the tensile and yield strength of AISI 1018?
Per AISI: minimum tensile is 440 MPa and minimum yield is 370 MPa. Actual mill certificates typically show values 5–15% above the standard minimum.
What is the price of AISI 1018 ERW Pipes in India?
Prices vary by size, schedule, quantity and current steel market rates. Contact BB Infras for a firm quotation from our Mumbai stockyard.
Authoritative Standards Referenced
| Standard | Issuing Body | Scope |
|---|---|---|
| AISI/SAE 1018 | ASTM / ASME | Material specification for AISI 1018 |
| ASME B36.10M | ASME | Welded and seamless wrought steel pipe — dimensional standard |
| ASTM A530 | ASTM | General requirements for specialised carbon and alloy steel pipe |
| EN 10204:2004 | CEN | Metallic products — types of inspection documents (3.1 MTC) |
| NACE MR0175 / ISO 15156 | NACE/ISO | Materials for H₂S service in oil and gas production |
