SS316 Sample MTC Certificate
Access a comprehensive, professionally formatted EN 10204 3.1 sample Material Test Certificate for Stainless Steel 316 (A4-80 / UNS S31600 / EN 1.4401). Inspect the exact documentation your engineering and QA teams will receive with every Ananka Fasteners order — complete with heat-traceable chemistry, Molybdenum enrichment verification, and A4-80 cold-worked mechanical properties essential for highly corrosive marine and chemical environments.
What's Inside This SS316 (A4-80) MTC Certificate
This sample A4-80 mill test certificate mirrors the rigorous QA documentation package shipped with every marine-grade austenitic stainless steel order. It demonstrates how Ananka Fasteners reports critical metallurgical and mechanical data ensuring audit-readiness for high-stress, corrosive environments.
- Full Traceability: Heat and lot numbers linking each hex screw, stud bolt, or threaded rod directly back to its original melt.
- Chemical Composition: Verification of essential elements including Chromium (16-18.5%), Nickel (10-15%), and Molybdenum (2-3%) for superior chloride pitting resistance.
- A4-80 Property Class Data: Explicit reporting of cold-worked strength levels meeting or exceeding the rigorous ISO 3506-1 requirements.
- Mechanical Properties: Verified elevated tensile strength (min 800 MPa), yield strength (min 600 MPa), and elongation (min 0.3d) to guarantee load-bearing integrity.
Live Preview: SS316 (A4-80) MTC Data
Review the standard parameters and layout before downloading the full PDF document.
TC Number
S18/26-27
TC Date
21.04.2026
Heat Number
HT-316xxxx
Lot Number
C064
Material Spec
A4-80 (SS316)
Dimensions / Item
Hex Head Screws M8 x 20mm
Chemical Composition (Actual Results %)
| Carbon (C) | Manganese (Mn) | Silicon (Si) | Chromium (Cr) | Nickel (Ni) | Molybdenum (Mo) | Sulfur (S) |
|---|---|---|---|---|---|---|
| 0.024 | 1.632 | 0.420 | 16.630 | 10.030 | 2.020 | 0.006 |
| Max 0.080 | Max 2.000 | Max 1.000 | 16.000 - 18.500 | 10.000 - 15.000 | 2.000 - 3.000 | Max 0.030 |
Mechanical Properties (Tested at Room Temp 25°C)
| Tensile Strength | Yield Strength (0.2% Offset) | Elongation (0.3d) | Hardness (HRC) |
|---|---|---|---|
| 937.78 MPa | 821.20 MPa | 28.29 % | 21, 20, 21 HRC |
| Min 800.00 MPa | Min 600.00 MPa | Min 0.3d | Max 24 HRC |
Standard References: Marine & High-Strength Fastener Compliance
Our SS316 MTC certificates map strictly to the most demanding international specifications for corrosive environments. The mechanical properties explicitly verify the high-strength "Class 80" cold-worked condition.
| Standard | Application Focus |
|---|---|
| ISO 3506-1 (A4-80) | The defining standard for mechanical properties of corrosion-resistant stainless steel fasteners. "A4" specifies the Molybdenum-alloyed austenitic grade (SS316), and "80" guarantees high-tensile cold-drawn strength (800 MPa). |
| ASTM A193 / A320 | Often cross-referenced for stainless steel bolting materials (Grades B8M / B8M Class 2) intended for high-temperature or cryogenic service environments. |
Ananka Fasteners' Certification Capabilities
Every A4-80 (SS316) fastener leaves our facility with complete mill-to-product traceability. EN 10204 3.1 certification is provided as standard for absolute transparency in procurement.
Marine & Coastal
- EN 10204 3.1 Standard
- Resists seawater chloride pitting
- A4-80 High Strength Class
Chemical & Pharma
- ISO 3506-1 Compliant
- Withstands aggressive solvents
- Prevents product contamination
Water Treatment
- Molybdenum (Mo) verified
- Long-term corrosion immunity
- Full Heat Traceability
Technical FAQs — SS316 (A4-80) MTC Certificate
What exactly does "A4-80" mean on my SS316 MTC?
Under the ISO 3506 standard, "A4" designates the austenitic stainless steel group alloyed with Molybdenum (which corresponds to SS316 / 1.4401). The "80" indicates the property class, meaning the fastener has been cold-worked to achieve a minimum tensile strength of 800 MPa and a minimum yield strength of 600 MPa. This provides significantly higher load-bearing capacity than standard A4-50 or A4-70 fasteners.
Why is Molybdenum (Mo) reporting critical for SS316?
Standard austenitic steels like SS304 lack Molybdenum. The addition of 2-3% Molybdenum in SS316 provides a massive boost to pitting and crevice corrosion resistance. Your MTC must verify this specific Molybdenum content to guarantee the fastener will survive in chloride-rich environments like coastal areas, offshore platforms, or de-icing salt exposure.
Can I download a free SS316 (A4-80) MTC certificate sample?
Yes. Ananka Fasteners provides a free, downloadable EN 10204 3.1 sample MTC for A4-80 (SS316) on this page. Procurement managers and engineers can preview our transparent reporting of the Molybdenum-enriched chemistry and high-strength mechanical properties before placing an order.