Incoloy 825 fasteners resist sulfuric and phosphoric acid well. Pickling plants and fertilizer units use them for this reason. Oshwin Overseas manufactures Incoloy 825 Bolts in Mumbai, India to ASTM B564/B408 UNS N08825. Alloy 825 Hex bolts, threaded rod, stud bolts, nuts and washers are made as per client's drawing. Oshwin ships to Germany, Netherlands, Singapore and South Africa with test certificates on every batch.
Titanium-Stabilized
Resists intergranular attack near welds and heat-affected zones.
M1.6-M56 Stocked Ex-Mumbai
From Swiss precision bolts to 1-1/8″ stud bolts, ex-Mumbai.
(ASTM B425)
- Grade
- UNS N08825
- Standard
- ASTM B425 / F468
- Size Range
- M1.6-M56 / 1/16″-2″
- Grain Stability
- Titanium-Stabilized
- MTC
- EN 10204 3.1
- Lead Time
- 2-5 Days
Incoloy 825 Stud Bolts & Nuts Manufacturer in India, MTC to EN 10204 3.1 on Every Batch
ASTM B425 UNS N08825 Threaded Rod Machined From M1.6 Precision Sizes Up to 1-1/8″ Heavy-Duty Diameters
Table of Contents
- Incoloy 825 Bolts Specification
- Incoloy Alloy 825 Fasteners - Every Type We Supply
- ASTM B425 UNS N08825 Bolts Chemical Composition
- Alloy 825 Bolts Mechanical Properties & Tensile Strength
- UNS N08825 Bolts Titanium-Stabilized Chemistry Resists Intergranular Attack
- Nickel 825 Bolts Equivalent Grades
- Incoloy 825 Fasteners for Sulfuric & Phosphoric Acid Fertilizer-Plant Service
- Alloy 825 Bolts & Nuts Torque Guidance
- UNS N08825 Bolts Paired with ASTM A193 Grade B8M Nuts - Mixed-Metal Bolting Guidance
- Common Incoloy Alloy 825 Bolt & Stud Enquiries We Handle
- Applications of Incoloy 825 Bolts
- UNS N08825 Bolts - Buyer FAQs
Incoloy 825 Bolts Specification
Oshwin runs both cold-headed and hot-forged lines for Incoloy 825 Bolts at our Kalamboli, Navi Mumbai factory. Diameters up to M20 are cold formed for tighter thread control. Larger stud bolts and custom sizes go through hot forging instead.
Incoloy 825 Cold Headed Bolts
M1.6-M20 / 1/16″-3/4″, lengths 3-150mm
Alloy 825 Hot Forged Fasteners
M20-M100 / 3/4″-4″, lengths up to 1200mm
Certification
EN 10204 3.1 Material Test Certificate
Compliance
NACE MR0175, ASTM F2281 on request
Service Range
Cryogenic up to 1000°F (540°C)
Thread Forms
UNC, UNF & ISO Metric, M1.6-M56
Titanium-Stabilized Grade
0.6-1.2% Ti added to resist sensitization
Sizes Buyers Order Most
Incoloy 825 Bolts Manufacturer in India - Mumbai, Since 1999
Every batch goes through machining and full traceability testing before it ships.
Request Quote NowIncoloy Alloy 825 Fasteners - Every Type We Supply
Product photography for this grade is being updated at our Mumbai facility. Incoloy 825 nuts and washers are stocked heat-matched to the bolts below. Head styles beyond this list are cut to drawing on request.
ASTM B425 UNS N08825 Bolts Chemical Composition
Per ASTM B425 (Ni-Fe-Cr-Mo-Cu, titanium-stabilized). Full heat-wise composition on the EN 10204 3.1 certificate.
Alloy 825 Bolts Mechanical Properties & Tensile Strength
Incoloy 825 Bolts Mechanical Properties are fixed in the solution-annealed bar condition per ASTM B425. No further heat treatment is needed before use.
Values shown are for solution-annealed bar per ASTM B425. Above 1000°F, microstructure changes lower ductility.
UNS N08825 Bolts Titanium-Stabilized Chemistry Resists Intergranular Attack
Nickel 825 Bolts Equivalent Grades
European mill certificates sometimes stamp this grade as DIN 2.4858 instead of the Werkstoff number alone.
Incoloy 825 Bolts Supplier in India for Export & Distributor Orders
Qatar, USA and Swiss buyers get MTC 3.1 paperwork and a firm quote within one working day.
Request Export QuoteIncoloy 825 Fasteners for Sulfuric & Phosphoric Acid Fertilizer-Plant Service
Alloy 825 Bolts & Nuts Torque Guidance
Bolt torque follows the formula T = K × F × d. F is the target clamp load and K is a friction coefficient set by the lubricant. This holds for Incoloy 825 the same way it does for steel bolting.
Galling Risk
Run any Incoloy 825 thread dry and it can gall or seize
Anti-Seize
Use a nickel-alloy-rated anti-seize on every Incoloy 825 joint
Acid-Service Joints
Confirm gasket and lubricant compatibility with your process fluid
Buyer-Specified Torque
We confirm your exact torque target - never a generic figure
UNS N08825 Bolts Paired with ASTM A193 Grade B8M Nuts Mixed-Metal Bolting Guidance
A recent Huntsville, Alabama order asked for Incoloy 825 bolts run alongside A193 Grade B8M Class 2 nuts. Mixed-metal pairing works, but the joint's strength caps to the weaker material.
Common Incoloy Alloy 825 Bolt & Stud Enquiries We Handle
Here are recent requirements we've handled for Incoloy 825 Bolts and Nuts.
Incoloy 825 stud bolts for a Laredo, Texas buyer - 7/8″ x 8″ and 1-1/8″ x 6″. 36 EA total.
Incoloy 825 hex bolt and nut sets for a Qatar buyer - M10x20mm to M16x60mm, plus 17mm ID flat washers.
UNS N08825 bolts paired with A193 Gr. B8M nuts - M16x100L, Huntsville, Alabama, MTC EN 10204 3.1 required.
Swiss precision M1.6 Incoloy 825 orders - threaded bolts, rods and matching nuts, small quantities.
Incoloy 825 flange bolting for acid-service piping - matched to same-heat nuts and washers.
Alloy 825 stud bolts for pickling equipment - full threaded, cut to non-standard lengths on request.
Applications of Incoloy 825 Bolts
Sulfuric & Phosphoric Acid Chemical Processing
Nuclear Fuel Reprocessing & Waste Handling
Offshore Oil & Gas Piping Systems
Seawater Heat Exchangers & Marine Systems
Steel Pickling & Pollution-Control Equipment
Incoloy 825 Fasteners Exporter in India - NACE & ASTM F2281 Compliance
Titanium-stabilized stock, ready for immediate dispatch to acid-service projects.
Get Exporter QuoteOshwin Overseas Manufacturing Expertise
Our production line handles bar drawing, cold heading, hot forging and passivation in-house. As an Incoloy 825 bolts manufacturer, this control holds tight thread tolerance on titanium-stabilized stock.
Testing, Documentation & Third-Party Inspection
Our Export Network
Qatar and the wider Gulf order Incoloy 825 hex bolt and nut sets regularly from us. USA buyers span Texas to Alabama, and we ship precision M1.6 orders to Switzerland too.
Americas
USA
Canada
Middle East
Qatar
UAE
Saudi Arabia
Kuwait
Oman
Europe & UK
Switzerland
Germany
Netherlands
United Kingdom
Belgium
Turkey
Africa
Nigeria
Egypt
South Africa
Southeast & South Asia
Indonesia
Thailand
Vietnam
Philippines
Malaysia
Singapore
South Korea
Australia
Recent Incoloy 825 Bolt Export Supplies
Mumbai
Laredo, TX
Product: Incoloy 825 Stud Bolts, UNS N08825
Size: 7/8″ x 8″ & 1-1/8″ x 6″, 36 EA total
Mumbai
Doha, Qatar
Product: Incoloy 825 Hex Bolt, Nut & Flat Washer Set
Size: M10x20mm-M16x60mm, washers 17mm ID
Mumbai
Huntsville, AL
Product: UNS N08825 Bolts with A193 Gr. B8M Nuts
Size: M16x100L, MTC EN 10204 3.1
Mumbai
Switzerland
Product: Incoloy 825 M1.6 Threaded Bolts, Rods & Nuts
Size: M1.6 x 20mm, small precision quantities
Delivery Estimate From Ready Stock
Ships from Mumbai
Kalamboli warehouse dispatches ex-stock sizes within 2-5 days
Sea Freight
Lowest freight cost, transit runs 15-30 days by port
Air Freight
Choose this for Qatar or Swiss precision orders on a deadline
Get a Firm Date
Share your discharge port for a confirmed ETA on request
Qatar12-18 daysUSA20-28 daysSwitzerland16-22 daysUAE10-15 daysFigures above are port-to-port by sea. Switch to air and any of these lands in 3-6 days instead.
UNS N08825 Bolts - Buyer FAQs
B425 covers the bar Incoloy 825 bolts are machined from. F468 covers the finished bolts, cap screws and studs, and F467 covers the nuts. F2281 is used when a buyer wants combined acid-service bolting under one spec.
Titanium is added during manufacturing. It bonds with carbon first, so chromium stays protected near welds. This helps in chemical and fertilizer plants handling sulfuric or phosphoric acid. The UNS N08825 bolts stays corrosion-resistant even near the weld zone.
Yes for lower-duty joints. Some buyers choose this to save cost. A193 B8M nuts are cheaper than Incoloy 825 nuts. But for full corrosion match in acid service a same-alloy Incoloy 825 nut is the stronger choice.
Ex-stock M1.6 to M56 metric and 1/16 inch to 2 inch, cut to length on request. Recent orders ranged from M1.6 precision bolts to 1-1/8 inch stud bolts.
Yes, it was developed specifically to improve on Incoloy 800's sulfuric acid resistance. Molybdenum and copper additions also help it perform well in reducing acid service.
Yes. Nickel-alloy threads gall under dry torque, so use anti-seize or a matched lubricant. Share your clamp-load target and we'll confirm your exact torque figure.
Yes, every batch ships with its own EN 10204 3.1 certificate. Third-party inspection from SGS, BV or TUV is available on request.
Order custom for lengths outside M1.6-M56, non-standard threads or high-pressure flange service. Send your drawing to our manufacturer team for a quote.