ASTM A194
Grade 8N
Stainless Steel Nuts
Understanding Grade 8N vs Grade 8P
Grade 8N sits directly alongside Grade 8P on our site — both are genuinely less common ASTM A194 designations built around nitrogen alloying rather than cold working as the route to higher proof load than plain Grade 8. Being direct about this: the precise distinction between 8N and 8P — whether it’s base alloy (304-type versus 316-type), nitrogen content level, or another compositional nuance defined specifically within the ASTM A194 standard — is exactly the kind of detail we’d rather confirm against the governing document than guess at.
What we can say with confidence is the shared underlying principle — nitrogen genuinely increases strength in austenitic stainless through a mechanism separate from carbon content or mechanical cold working, the same established metallurgy behind the LN grade family covered elsewhere on our site. Whichever specific alloy and nitrogen level the “N” in this designation refers to, that fundamental strengthening logic is solid.
Because this is a genuinely specialized designation, we recommend confirming the exact base alloy composition and proof-load requirement against the current ASTM A194 standard text or your project specification before finalizing an order.
Akbar Fasteners Pvt. Ltd. exports to over 50 countries, and we’re glad to manufacture to this specification once the exact composition and property requirements are confirmed, verified under our ISO 9001:2015 quality system.
An Honest Note on This Specific Grade
Grade 8N, like Grade 8P, is a considerably less commonly specified designation than our core Grade 8, 8M, and 8C family, and published, detailed reference material distinguishing it precisely from Grade 8P is genuinely limited. We manufacture to this specification when a customer provides the exact composition and property requirements — either from the current ASTM A194 standard text or a project-specific data sheet — rather than relying on general description alone. If you’re specifying this grade, please share the governing document with your inquiry so we can confirm manufacturability and confirm the precise distinction from Grade 8P accurately.
Where This Grade Genuinely Applies
Genuine Strength Without Cold Working
Nitrogen alloying raises proof load while keeping the part in a solution-annealed condition.
Correct Default Pairing With B8N Studs
Matched material and mechanical properties for straightforward assembly compatibility.
Project-Specific Specification
Typically called out by name on a specific project drawing or governing specification.
Verified Against Your Governing Document
We manufacture to the composition and property requirements you provide, confirmed before production.
Grade 8N Alongside Related Grades
Grade 8N (This Page)
Nitrogen-strengthened higher proof-load stainless nut, exact base alloy confirmed per governing document.
You Are HereGrade 8P
Our other nitrogen-strengthened specialty grade — the precise distinction from 8N is worth confirming together.
View Grade 8P → Established Nitrogen FamilyGrade 8LN
Nitrogen strengthening combined with low carbon for weld-decay resistance — see our well-established B8LN grade page.
View B8LN Reference →Grade 8N Specification Approach
Shared Elements With Related Grades
- Base Type Austenitic Stainless
- Nitrogen Deliberate Strengthening Addition
- Condition Solution Annealed
- Chromium/Nickel Per Governing Standard
What Makes This Grade Different
- Proof Load Higher Than Grade 8, Confirmed Per Order
- Exact Base Alloy Confirmed vs Grade 8P
- Matching Bolt ASTM A193 Grade B8N
- Mechanical Properties Confirmed Per Order
Our Order Process for Grade 8N
- Step 1 Confirm Governing Document
- Step 2 Verify Composition Limits
- Step 3 Manufacture & Test to Spec
- Step 4 Issue Full Documentation
Application Context
Wherever higher proof load is needed without cold-worked microstructure, typically driven by a specific project standard.
Demanding Bolted Joints
strain-hardened microstructure
High-Value Custom Fabrication
tied to a governing standard
Engineering-Specified Critical Bolting
is dictated by design engineering
Power & Energy Infrastructure Projects
standards and specifications
Standard Export Documentation
Prepared as standard practice once composition and property requirements are confirmed for your order.
Mill Test Certificate (MTC)
Heat number, chemical composition, and mechanical property verification for every lot.
Chemical Composition Report
Confirms actual nitrogen content and base alloy composition against your confirmed specification.
Certificate of Conformance
Confirms the shipment matches the purchase order specification in full.
Certificate of Origin (COO)
Confirms India as country of manufacture for destination customs purposes.
NABL Accredited Test Reports
Independent mechanical and chemical testing available on request for critical applications.
Commercial Invoice & Packing List
Itemized value, Incoterm, and detailed carton/weight breakdown for customs clearance.
Internationally Recognised Standards Coverage
Related Fastener Grades & Materials
ASTM A194 Grade 8P
Our other nitrogen-strengthened specialty grade — best confirmed alongside this one against the standard.
View Grade 8P →ASTM A193 Grade B8LN
Our well-established nitrogen-strengthened, low-carbon grade for weld-critical service.
View Grade B8LN →ASTM A194 Grade 8A
Our strain-hardened alternative route to higher strength, via cold working instead of nitrogen.
View Grade 8A →Stainless Steel Fasteners Manufacturer India
Our broader stainless steel fastener manufacturing capability across all major grades.
View SS Manufacturer Guide →Have the Governing
Specification for This Grade?
Share your project standard or the ASTM A194 edition you’re working to, and we’ll confirm manufacturability, composition, and mechanical property alignment before quoting. Akbar Fasteners Pvt. Ltd. responds within 24 hours.
Sales: +91 724 0000 733 · Support: +91 800 9315 333 · sales@akbarfasteners.in