Inconel 718 Mother CoilASTM B670 · ASTM A480 / mill standard · Manufacturer, trader & exporter, India
Alloy 718 · UNS N07718
An Inconel 718 mother coil is full-width coil straight from the rolling mill, made from Inconel 718 to ASTM B670. Mother coils are bought by service centres and tube mills for slitting and processing.
- ASTM B670
- ASTM A480 / mill standard
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an Inconel 718 Mother Coil?
- What it is
- Full-width coil straight from the rolling mill
- Material
- ASTM B670
- Dimensions
- ASTM A480 / mill standard
- Grade
- Inconel 718 · UNS N07718
- Best at
- Very high strength at temperatures up to about 650 °C
Inconel 718 Mother Coil Specification
| Product | Inconel 718 Mother Coil |
|---|---|
| Material standard | ASTM B670 |
| Dimensional standard | ASTM A480 / mill standard |
| Thickness | 0.1 – 6 mm by route |
| Width | Mill width or slit to order |
| Testing | PMI (as specified in the PO) · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 or 3.2 on request / as specified in the PO |
When to Choose a Mother Coil
Mother coils are bought by service centres and tube mills for slitting and processing.
- Full mill width
- Hot or cold rolled
- Heavy coil weights
More on choosing: Mother coil guide.
Inconel 718 Mother Coil: Why 718 for mother coils
Mother coils are bought by service centres and tube mills for slitting and processing. In Inconel 718, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Nickel-alloy strip is slit for bellows, springs and precision parts. Inconel 718 is picked for very high strength at temperatures up to about 650 °C. |
|---|---|
| Typical service | Oil & gas — Wellhead parts, hangers and high-strength bolting. |
Inconel 718 Mother Coil Chemical Composition
| Element | Weight % (producer reference) |
|---|---|
| Nickel (+Co) | 50.00 – 55.00 |
| Chromium | 17.00 – 21.00 |
| Iron | Balance |
| Niobium (+Ta) | 4.75 – 5.50 |
| Molybdenum | 2.80 – 3.30 |
| Titanium | 0.65 – 1.15 |
| Aluminium | 0.20 – 0.80 |
| Cobalt | 1.00 max |
Inconel 718 Mother Coil Mechanical Properties
| Specification | Product form | Condition | Requirement values |
|---|---|---|---|
| ASTM B670 (B670-25) | plate, sheet, strip | annealed (per current scope) | As specified |
Numerical requirements are not shown until the current edition of each standard has been verified. Mechanical properties depend on product form, size, condition and heat treatment — state them on the purchase order.
Full chemistry, properties and equivalents are on the Inconel 718 grade page.
Other Inconel 718 coils
Inconel 718 Mother Coil — questions buyers ask
What width is a mother coil?
Full mill width, typically 1000 – 1600 mm depending on the mill.
Which standard covers Inconel 718 mother coils?
The material is ASTM B670; dimensions follow ASTM A480 / mill standard. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a Inconel 718 mother coil?
The alloy price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 or 3.2 certificates available on request / as specified in the PO; dimensional reports as required. PMI can be arranged depending on product and requirements, as specified in the PO.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026