Inconel 625 WasherASTM B446 · ASME B18.22.1 · Manufacturer, stockist & exporter, India
Alloy 625 · UNS N06625
An Inconel 625 washer is a flat or spring ring that spreads bolt load, made from Inconel 625 to ASTM B446. Flat washers protect the joint surface and spread load; spring and lock washers resist loosening. Match the washer material to the bolt to avoid galvanic corrosion.
- ASTM B446
- ASME B18.22.1
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an Inconel 625 Washer?
- What it is
- A flat or spring ring that spreads bolt load
- Material
- ASTM B446
- Dimensions
- ASME B18.22.1 · DIN 125
- Grade
- Inconel 625 · UNS N06625
- Best at
- Seawater, high strength and high temperature in one alloy
Inconel 625 Washer Specification
| Product | Inconel 625 Washer |
|---|---|
| Material standard | ASTM B446 |
| Dimensional standard | ASME B18.22.1 · DIN 125 |
| Sizes | M10 – M64 · ½" – 4" (others on request) |
| Threads | UNC · UN-8 · metric coarse |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Washer
Flat washers protect the joint surface and spread load; spring and lock washers resist loosening. Match the washer material to the bolt to avoid galvanic corrosion.
- Flat, spring and lock
- ASME B18.21.1 · DIN 125 / 127
- Material to match the bolt
Inconel 625 Washer Chemical Composition
| Element | Weight % |
|---|---|
| Nickel | 58.0 min |
| Chromium | 20.0 – 23.0 |
| Molybdenum | 8.0 – 10.0 |
| Niobium + Tantalum | 3.15 – 4.15 |
| Iron | 5.0 max |
| Carbon | 0.10 max |
| Manganese | 0.50 max |
| Silicon | 0.50 max |
Inconel 625 Washer Mechanical Properties
| Grade 1 annealed plate | Value |
|---|---|
| Tensile strength | 827 MPa · 120 ksi |
| Yield strength 0.2% | 414 MPa · 60 ksi |
| Elongation | 30% |
Full chemistry, properties and equivalents are on the Inconel 625 grade page.
Standards on this page
Other Inconel 625 fasteners
Inconel 625 Washers for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiInconel 625 Washer — questions buyers ask
Do I need washers on flange bolting?
Many specifications require through-hardened washers under nuts for controlled tightening; follow the project bolting spec.
Which standard covers Inconel 625 washers?
The material is ASTM B446; dimensions follow ASME B18.22.1 · DIN 125. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a Inconel 625 washer?
The alloy price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
Can you supply Inconel 625 washers to NACE MR0175?
Yes. Inconel 625 is listed in NACE MR0175 / ISO 15156-3 within its limits; state NACE compliance on the order and it is confirmed on the certificate.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026