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Nimonic 105 Washers Manufacturer & Exporter in India

Explore Nimonic 105 Washers Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
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-196

Min Temp

870

Max Temp

🌡

870

Suitable for continuous service up to approximately 870°C under typical operating conditions.

⚡

620

Typical tensile strength around 620 MPa depending on product form and heat treatment.

🛡

Very Good

Very Good corrosion resistance in a wide range of industrial environments.

⚖

8

Typical density is approximately 8.0 g/cm³.

Product Overview

What are Nimonic 105 Washers?

Nimonic 105 washers are high-performance nickel-chromium-cobalt alloy flat, spring, and lock washers manufactured from UNS N13021 bar or sheet, conforming to ASTM B637. Designed for extreme temperature and stress environments, these washers offer outstanding creep resistance, oxidation stability, and mechanical strength up to 1050°C. Nimonic 105 washers are widely specified in gas turbine, aerospace, and high-temperature bolted joint applications where conventional stainless steel or Inconel washers fail due to thermal fatigue or stress relaxation.

With a typical tensile strength exceeding 1100 MPa and excellent resistance to scaling and carburization, Nimonic 105 washers ensure reliable load distribution and joint integrity in the most demanding service conditions, including jet engines, turbochargers, and power plant turbines.

Quick Specifications

MaterialNimonic 105
UNS NumberN13021
DIN Number2.4634
Material StandardASTM B637
Washer Standard (Metric)DIN 125 / DIN 127 / DIN 6796
Washer Standard (Inch)ASME B18.22.1
Washer TypesFlat, Spring, Belleville, Tab
Size RangeM3-M64 / 1/8"-2.5"
Tensile Strength1100 MPa (160 ksi) min
Yield Strength800 MPa (116 ksi) min
HardnessMax 38 HRC / 350 HB
? All material certified by NABL-accredited laboratory. PMI and hardness survey available on request.

Complete the Fastener Set

Other Nimonic 105 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Nimonic 105 fastener range from certified nickel-chromium-cobalt superalloy bar stock, including Nimonic 105 Bolts, Nimonic 105 Nuts, Nimonic 105 Screws, Nimonic 105 Studs, and Nimonic 105 Threaded Rods. All Nimonic 105 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Nimonic 105 Bolts
Nimonic 105 Nuts
Nimonic 105 Screws
Nimonic 105 Studs
Nimonic 105 Threaded Rods

Technical Data

Nimonic 105 Washers Dimensions, Sizes & Thread Standards

Nimonic 105 Washers are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 125 (flat), DIN 127 (spring), DIN 6796 (Belleville), and ASME B18.22.1. Custom OD/ID and thickness available. Metric and inch sizes supplied. All Nimonic 105 washers dimensions are verified against applicable DIN, ISO, and ASME B18

Flat Washer Dimensions - Metric (DIN 125)

Size (M)ID (mm)OD (mm)Thickness (mm)
M33.270.5
M66.4121.6
M88.4161.6
M1010.5202.0
M1213.0242.5
M1617.0303.0
M2021.0373.0
M2425.0444.0
M3031.0564.0
M3637.0665.0
M4243.0786.0
M4849.0926.0
M5657.01058.0
M6465.01158.0

Dimensional & Material Standards

StandardCoversType
DIN 125Flat washersMetric
DIN 127Spring lock washersMetric
DIN 6796Belleville washersMetric
ASME B18.22.1Plain & lock washersInch
ISO 7089Flat washersMetric
ISO 7090Chamfered washersMetric
Material StandardRequirement
ASTM B637Bar/rod/sheet - UNS N13021
AMS 5829High-temp fasteners
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Nimonic 105 Chemical Composition

Nimonic 105 Washers are manufactured from a precipitation-hardened nickel-chromium-cobalt superalloy with titanium and aluminium additions per AMS and BS HR specifications. These elements form the gamma-prime (Ni₃Al,Ti) precipitate phase that delivers creep rupture strength above 700°C — a performance level unachievable with standard nickel or stainless alloys.

Chemical Composition per ASTM B637

ElementComposition (%)
Nickel (Ni)Base (=54%)
Chromium (Cr)15.0-16.0
Cobalt (Co)19.0-21.0
Titanium (Ti)1.2-1.7
Aluminium (Al)4.5-5.2
Carbon (C)0.12 max
Zirconium (Zr)0.12-0.20
Boron (B)0.010-0.020
Silicon (Si)1.0 max
Manganese (Mn)1.0 max
Iron (Fe)3.0 max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Nimonic 105 Alloy Composition Matters for Washers

Co (19–21%) — High-Temperature Strength
Cobalt enhances the alloy’s ability to retain mechanical strength at temperatures up to 1050°C, making Nimonic 105 washers ideal for turbine and exhaust assemblies.
Al + Ti — Precipitation Hardening
Aluminium and titanium promote ?' phase precipitation, delivering exceptional creep and stress rupture resistance under sustained high loads and thermal cycling.
Zr + B — Grain Boundary Stability
Zirconium and boron additions improve grain boundary cohesion, reducing the risk of intergranular cracking and ensuring long-term washer integrity in cyclic service.

Fastener Performance

Nimonic 105 Washers Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Nimonic 105 Washers per ASTM. Nimonic 105 washers achieve 620 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Washer SizeRecommended Bolt Torque (Nm)Max Load (kN)
M6128.5
M104821
M1621054
M2042085
M24730120
M301460190
M362540270
?? Anti-galling: Use nickel-based anti-seize on mating fasteners. For spring and Belleville washers, consult engineering for dynamic load applications.

Industry Applications

Nimonic 105 Washers Applications — Industries & End Uses

Nimonic 105 Washers from RealBolt are specified across aerospace gas turbines, power generation, and high-temperature furnaces where very good corrosion resistance and 620 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Jet Engine & Turbine Mounts
Power Generation – Steam & Gas Turbines
Flat and Belleville washers for HRSG ducting, steam turbine casing bolts, and gas turbine exhaust flange connections. Nimonic 105 resists stress relaxation and scaling at 900-1050°C, outperforming stainless steel and Inconel washers in thermal cycling and vibration-prone assemblies.
Turbocharger & Exhaust Manifolds

Nimonic 105 Washers Standards & International Certifications

Nimonic 105 Washers from RealBolt Engineering Industries are manufactured to internationally recognised fastener dimensional standards covering thread form, tolerances, strength grades, and quality requirements. Every batch ships with EN 10204 MTC 3.1/3.2, AMS material certification, heat treatment records, and first article inspection report (FAIR) — available on request for all orders.
Standards
DIN 125A DIN 127 ISO 7089 ISO 7090 ASME B18.21.1 IS 1367
Certifications
Flat and tab washers for missile fin assemblies, spacecraft engine mounts, and high-temperature structural joints where weight, strength, and oxidation resistance are critical. Qualified to AMS and EN standards for aerospace use.

Buy Nimonic 105 Washers from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Nimonic 105 Washers — for competitive pricing, EN 10204 MTC 3.1/3.2 documentation, and fast Mumbai dispatch. Standard sizes are ex-stock; custom dimensions accepted with 2–3 week lead time. Request your quote today.
022-6743-7972
+91 90226 36025
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Answers for Buyers

Nimonic 105 Washers — Frequently Asked Questions

Browse expert answers to common questions about Nimonic 105 Washers from RealBolt — covering AMS specification, heat treatment, creep rupture data, max service temperature, sizes, and aerospace certification. Contact our technical team directly for project-specific guidance on Nimonic 105 washers selection and pricing.
ISO 9001:2015NABL LabPED 2014/68/EUMTC 3.1 / 3.2
India’s leading manufacturer of high-temperature alloy washers. Ex-stock Mumbai for standard sizes. Custom dimensions and profiles supplied with 2-3 week lead time.
What standards are available for Nimonic 105 washers?
Can Nimonic 105 washers be used at temperatures above 1000°C?

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