Why Industrial Buyers Prefer ASTM A479 UNS S32750 Washers From Ganpat Industrial?
Ready Rack Stock
M6 to M64 Super Duplex 2507 sizes on shelf – quoted within 24 hours
Full Heat Traceability
UNS S32750 billet linked to every washer batch, ASTM A479 & NACE MR0175 compliant
Factory-Direct Pricing
Billet to finished washer under one roof – no trading middlemen
Zero Rejection At Site
PMI • hardness • dimensional • visual cleared before every dispatch
One PO, Every Washer Type
Flat • Spring • Lock • Square • Ogee • Star in a single shipment
ASTM A479 UNS S32750 Washers Snapshot
- 1Size Range: M6 to M64 • Custom bore & OD on drawing
- 2Grades Available: UNS S32750 • WNR 1.4410 • SAF 2507 • S32760 on request
- 3Origin: India • Sweden • Germany
- 4Types: Flat, Spring, Square, Lock, Ogee, Dome, Split Ring & Star Washers
- 5Condition: Solution annealed, pickled & passivated, precision punched
- 6Standards: ASTM A479, ASME SA479, DIN 125, DIN 127, ASME B18.22.1
Or call our Mumbai office: +91 22 6743 7134 • Same-week dispatch on ready stock sizes
Ganpat Industrial punches ASTM A479 UNS S32750 washers from certified super duplex billet. Every blank is solution annealed in-house. Bores are precision sized to DIN and ASME tolerances. The 25% chromium, 4% molybdenum structure resists chloride pitting. It resists crevice attack in seawater service. It outperforms 316L in offshore and desalination duty. Standard austenitic washers crack under high-chloride stress. S32750 washers hold the seal instead. Ganpat Industrial Corporation has operated from Mumbai for over two decades. We manufacture duplex, super duplex and exotic alloy fasteners. Shipments move to India, the UAE, Europe and the wider Middle East. Ready stock is maintained across common bolt sizes.
Mumbai · Super Duplex Fastener & Washer Manufacturer
ASTM A479 UNS S32750 Washers
Ganpat Industrial punches and precision finishes ASTM A479 UNS S32750 Super Duplex Steel Washers for joints that cannot risk crevice or pitting failure – offshore platforms, desalination trains and subsea pipelines across India, the UAE and Europe.
- ✓ISO 9001:2015
- ✓PED 2014/68/EU
- ✓NACE MR0175
- ✓ASTM A479 Certified
- ✓Petrofac Approved Vendor
Super Duplex 2507 UNS S32750 Washers Manufacturer in India With ASME & DIN Dimensions
Specification Of ASTM A479 UNS S32750 Washers
S32750 Washer Material Grade
- UNS S32750
- WNR 1.4410
- SAF 2507 / Super Duplex 2507
- ASTM A479 / ASME SA479
UNS S32750 Washer Size Range
- Bore: M6 – M64
- OD: 12mm – 115mm
- Thickness: 1.6mm – 9mm
- Custom bore on drawing
Governing Standard
- ASTM A479
- ASME SA479
- DIN 125 / DIN 127
- ASME B18.22.1
ASTM A479 Surface Finish
- Pickled & Passivated
- Bright Machined Finish
- PTFE Coated (on request)
- Natural Mill Finish
S32750 Washer Production Route
- Precision Blanking / Punching
- Solution Annealing
- CNC Edge Machining
- Pickling & Passivation
ASME SA479 Testing Offered
- PMI Testing
- Hardness Test
- Dye Penetrant (DPT)
- Third-Party Inspection
UNS S32750 Documentation
- Mill Test Certificate 3.1
- Material Traceability Report
- Packing List
- Certificate Of Origin
S32750 Washer Origin
- Indian Origin
- Swedish Origin
- European Origin
- Traceable To Heat Number
S32750 Washer Packaging
- Poly Bagged Per 100 Pcs
- Wooden Pallet Boxes
- Vacuum Pack (export)
- Carton With Silica Gel
Find Super Duplex Stainless Steel 1.4410 Washers Ready Stock Ideal For Oil And Gas Industry At Factory Price, PED Approved
Super Duplex Steel S32750 Washers Dimension Chart
| Nominal Size | Bore Dia (mm) | Outer Dia (mm) | Thickness (mm) |
|---|---|---|---|
| M6 | 6.4 | 12.0 | 1.6 |
| M8 | 8.4 | 16.0 | 1.6 |
| M10 | 10.5 | 20.0 | 2.0 |
| M12 | 13.0 | 24.0 | 2.5 |
| M16 | 17.0 | 30.0 | 3.0 |
| M20 | 21.0 | 37.0 | 3.0 |
| M24 | 25.0 | 44.0 | 4.0 |
| M30 | 31.0 | 56.0 | 4.0 |
| M36 | 37.0 | 66.0 | 5.0 |
Types Of Super Duplex 2507 Washers We Supply
S32750 Flat Washer
DIN 125
S32750 Spring Washer
DIN 127
S32750 Square Washer
Beam Type
S32750 Lock Washer
Split Type
S32750 Ogee Washer
Beveled
S32750 Dome / Belleville
Conical Disc
S32750 Split Ring Washer
Helical
S32750 Star Washer
Tooth Type
Application Of UNS S32750 Washer
ASTM A479 UNS S32750 washer supplier in India serving industries where a bolted joint has to outlast the plant around it.
Offshore Oil & Gas Platforms
Seawater Desalination Plants
Subsea Pipeline Flanges
Chemical Process Vessels
Marine & Shipbuilding
Pulp & Paper Bleach Plants
Power Generation Units
Heat Exchanger Assemblies
Sourcing S32750 Washers In Bulk For Your Project?Share your BOQ and get factory pricing with MTC 3.1, dispatched the same week.
S32750 Washers Vs S32760 Washers
UNS S32750 Washers (SAF 2507)
- Chromium, molybdenum & nitrogen alloyed
- PREN ≥ 41, CPT ≥ 35°C
- No tungsten or copper addition
- Preferred for offshore & desalination piping
- Wider global stock availability
UNS S32760 Washers (Zeron 100)
- Adds 0.50–1.00% Tungsten & Copper
- PREN ≥ 40, CPT ≥ 35°C
- Slightly lower nitrogen band (0.20–0.30%)
- Preferred in sour & acidic chloride media
- Supplied on request against drawing
Weight Chart Of Super Duplex Steel S32750 Washers
| Nominal Size | Plain Washer | Spring Washer |
|---|---|---|
| M6 | 0.11 | 0.04 |
| M8 | 0.20 | 0.11 |
| M10 | 0.39 | 0.20 |
| M12 | 0.58 | 0.38 |
| M16 | 1.06 | 0.89 |
| M20 | 1.64 | 1.52 |
| M24 | 3.11 | 2.62 |
| M30 | 5.05 | 4.43 |
| M36 | 8.73 | 6.73 |
Weekly Delivery of S32760 Washers To Below Countries
| Export to | Countries | Continent | Shipping Time | Ports |
|---|---|---|---|---|
|
Netherlands | Europe | 30 Days | Port of Rotterdam |
|
Kuwait | Asia | 10 Days | Shuaiba Port |
|
Nigeria | Africa | 30 Days | Port of Calabar |
Need S32750 Washers On A Fixed Delivery Date?Share your size list and get factory pricing with MTC 3.1, dispatched the same week.
Super Duplex 2507 Washers Price Factors
Send your size-wise quantity list and we revert with per-piece pricing within 24 hours, GST and HSN details included on the quotation itself.
HSN Code On S32750 Washers
HSN Code
7318 22 00
Threaded / non-threaded steel washers
Domestic GST
18%
Applicable on all India billing
Export Orders
Zero-Rated
Under LUT, subject to standard export documentation
Customs Reference
On Request
Import duty varies by destination country
S32750 Washers Vs 2205 (S31803) Washers
UNS S32750 Washers (SAF 2507)
- Chromium 24–26%, Molybdenum 3–5%
- PREN ≥ 41, CPT ≥ 35°C
- Tensile Strength ≥ 795 MPa
- Best for offshore, subsea & high-chloride duty
- Higher raw material cost than 2205
UNS S31803 Washers (Duplex 2205)
- Chromium 21–23%, Molybdenum 2.5–3.5%
- PREN ≥ 32, CPT ≥ 22°C
- Tensile Strength ≥ 620 MPa
- Suited for general process & moderate chloride duty
- More economical, wider stock availability
Test Certificates Of ASME SA479 Super Duplex Steel Washer
As a UNS S32750 washer supplier in India, we issue EN 10204 3.1 certificates with full heat traceability on every order.
Commercial Invoice
PO-matched invoice with HSN & GST breakup
Every Order
Certificate Of Origin
For customs clearance & import duty processing
Export Orders
Material Traceability Report
Billet heat number linked to finished washer batch
On Request
Monthly Delivery of S32760 Washers to Below Countries
| Export to | Continent | Shipping time |
|---|---|---|
 Mexico |
North America | 45 Days |
 South Africa |
Africa | 25-30 Days |
 Oman |
Asia | 5 Days |
 Kenya |
Africa | 19 Days |
Equivalent Grades Of UNS S32750 Washers
ASTM / ASME / UNS
- ASTM A479 / A182 F53
- UNS S32750
- ASME SA479
DIN / EN / WNR
- Werkstoff Nr. 1.4410
- DIN 17440
- X2CrNiMoN25-7-4
Trade Name (Scandinavia)
- SAF 2507®
- Super Duplex 2507
- Sourced On Drawing
JIS (Japan Reference)
- SUS329J4 (nearest group)
- JIS G4303 (ref)
- Import Grade S32750
IS (India Reference)
- IS 2016 (dimensional ref)
- Import Std: ASTM A479
- HSN 73182200
Closely Related Grade
- UNS S32760 • WNR 1.4501
- Zeron 100®
- Compared in Section 08
Chemical Composition Of Super Duplex Stainless Steel 1.4410 Washers
IronFe
Balance
ChromiumCr
24.00–26.00%
NickelNi
6.00–8.00%
MolybdenumMo
3.00–5.00%
ManganeseMn
≤ 1.20%
NitrogenN
0.24–0.32%
SiliconSi
≤ 0.80%
PhosphorusP
≤ 0.035%
SulphurS
≤ 0.020%
CarbonC
≤ 0.030%
Mechanical Properties Of SDSS S32750 Washer
ASTM A479 UNS S32750 Washers manufacturer in India providing advanced products built for extreme conditions with superior strength and technical excellence.
Tensile Strength
≥ 795 MPa
Min. Value
Yield Strength (0.2%)
≥ 550 MPa
Design Limit
Elongation
≥ 15%
Min. Value
Hardness
≤ 310 HBW
Max. Value
PREN Number
≥ 41
Pitting resistance equivalent, chloride service
Critical Pitting Temp.
≥ 35°C
ASTM G48 Method A test result
Density
7.8 g/cm³
Used for weight chart calculations
Melting Range
1350°C
Approximate solidus temperature
Packaging Of Super Duplex Steel S32750 Washers
Custom Labelling
PO number, size & heat number marked per buyer requirement
Export Vacuum Pack
Moisture-sealed for long-transit sea freight & humid climates
Poly Bagged By Count
100 / 500 pcs per bag with size tag fitted before packing
Wooden Pallet Box
For bulk quantities & container-load shipments
ASTM A479 UNS S32750 Washers Frequently Asked Questions
What standard governs UNS S32750 washers?
ASTM A479 and ASME SA479 govern the bar stock, with dimensions referenced to DIN 125, DIN 127 and ASME B18.22.1.
What is the difference between S32750 and S32760 washers?
S32750 relies on chromium, molybdenum and nitrogen; S32760 adds tungsten and copper for extra resistance in acidic chloride media. Both carry a similar PREN.
Are UNS S32750 washers magnetic?
Mildly, yes. The duplex microstructure is roughly half ferritic and half austenitic, unlike fully austenitic 316 washers.
Can custom size Super Duplex 2507 washers be produced?
Yes, bore, OD and thickness can be punched or machined against a buyer drawing outside the standard M6 to M64 range.
What documents come with every S32750 washer order?
Every dispatch includes an EN 10204 3.1 Mill Test Certificate, packing list and commercial invoice, with certificate of origin on export orders.
Call Now For the Clients List Based in Below Locations
| Regions | Country |
|---|---|
| West Africa | Nigeria, Ghana, Senegal |
| South Carolina | USA |
| North America | USA, Canada, Mexico |
| East Asia | China, Japan, South Korea |
| South America | Brazil, Argentina, Colombia |
| North Africa | Egypt, Morocco, Algeria |
| Middle East | Saudi Arabia, Iran, Iraq |
| South Asia | India, Pakistan, Bangladesh |
| Melanesia | Fiji, Papua New Guinea |
| East Africa | Kenya, Ethiopia, Tanzania |
6 Reasons to choose Ganpat Industrial Corporation
- Distributor of Heat Exchanger parts and Alloys for High Temperature applications.
- Stockholder and importer of Ferrous and non ferrous metals.
- Wide stock of prime quality austenitic and Ferritic Stainless Steel for Extreme pressure environment.
- Marine grade steel at lowest price in Mumbai.
- Compare Price per KG in India and China.
- Offer Resale price to local suppliers, traders and wholesalers in UAE, Saudi Arabia, Egypt, and USA