ISO 898-1 Class 12.9 MTC Certificate Sample – Download Free PDF

ISO 898-1 Class 12.9 Sample MTC Certificate

Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for ISO 898-1 Class 12.9. Inspect the exact documentation your QA and engineering teams will receive with every ultra-high-strength alloy steel bolt order.

ISO 9001-2015 EN 10204 3.1 ISO 898-1 CLASS 12.9

What's Inside This Class 12.9 MTC Certificate

This sample mill test certificate mirrors the rigorous QA documentation package standard for ultra-high tensile strength alloy steel fasteners shipped from our facilities.

Full Traceability: Certified with TC No.: B12/26-XX and corresponding ISO 898-1 specifications.
High-Strength Chemistry: Detailed breakdowns verifying the precisely controlled Carbon (0.28–0.50%) and alloying elements (Chromium, Molybdenum, etc.) required to guarantee deep hardenability and structural integrity.
Verified Heat Treatment: Explicit documentation of the Quenched and Tempered process. The material is tempered at a minimum of 425°C to achieve optimal strength while mitigating extreme brittleness.
Mechanical Properties: Comprehensive reporting of Tensile Strength (1250.00 MPa), Yield Strength (1145.00 MPa), Elongation (10.50%), and Hardness (40, 42, 41 HRC) per strict ISO 898-1 Class 12.9 limits.
Quality Compliance: 100% visual inspection carried out and verified free from defects and radioactive contamination.

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Note: This is a representative sample. Actual MTCs are issued per-heat with unique test values for every production lot to ensure strict specification conformance.

Live Preview: ISO 898-1 Class 12.9 MTC Data

Review the standard parameters and layout before downloading the full document.

TC Number

B12/26-XX

TC Date

14.11.20XX

Material Spec

ISO 898-1 Class 12.9-2023

Bar Shape / Size

Hex Bolt / M16

Dimensions / Item

Hex Head Bolt M16-2.0P x 80 mm

Quantity

2000 NOS

Chemical Composition %

C	Mn	P	S	B	Cr	Mo	Fe
0.40	0.85	0.015	0.010	0.001	1.05	0.25	Rem
Min: 0.28 Max: 0.50	Report	Max: 0.025	Max: 0.025	Max: 0.003	Alloy	Alloy	Rem

Mechanical Properties

TENSILE STRENGTH (MPa)	YIELD STRENGTH 0.2% Offset (MPa)	% ELONGATION (GL-50mm)	HARDNESS (HRC)
1250.00	1145.00	10.50	40, 42, 41
Min: 1220	Min: 1100	Min: 8	Min: 39 Max: 44

Download Full Report (PDF)

View Our Datasheet: View ISO 898-1 Class 12.9 Datasheet →

Standard References & Compliance

Our MTC certificates map to the demanding industrial standards for structural and mechanical fasteners. The test reports confirm compliance with As Per ISO 898-1 Class 12.9 EDT. 2023 with respect to the tests carried out.

Standard / Requirement	Confirmation on Certificate
Visual Inspection	100% visual inspection carried out & found free from defects.
Safety Requirements	Material is free from radioactive contamination.
Weld Repairs	No weld repair Perform.
Dimensional Accuracy	All Dimensions are as per PO Specification.

Certification Details

We confirm that above mentioned Items was Manufactured, Sampled, Tested and Inspected in accordance with the subjected Customer's Purchase Order and as applicable Drawings, Material Specifications, Codes & Standards and the results of the items have been determined to meet the users' requirements.

Documentation Standard

✓ EN 10204-2004: 3.1 Standard
✓ Free from radioactive contamination
✓ Certified ISO 9001: 2015 Company

Heat Treatments

✓ Quenched and Tempered
✓ Min. Tempering Temp: 425°C

Testing Conditions

✓ Chemical, Mechanical & hardness test carried at room temperature 25°C
✓ 100% visual inspection carried out

Technical FAQs — ISO 898-1 Class 12.9 MTC

What does the "12.9" designation mean on this certificate?

In the metric class system, the first number "12" indicates a nominal tensile strength of 1200 MPa (12 x 100). The second number ".9" indicates that the yield strength is 90% of the nominal tensile strength. As verified in the mechanical properties section, these bolts achieve a minimum tensile strength of 1220 MPa and a minimum yield strength of 1100 MPa.

What heat treatment is required for Class 12.9?

To reach ultra-high strength without becoming dangerously brittle, Class 12.9 fasteners must be manufactured from alloy steel and subsequently quenched and tempered. ISO 898-1 strictly requires a minimum tempering temperature of 425°C, ensuring the material retains sufficient ductility (minimum 8% elongation) for structural applications.

Can Class 12.9 bolts be electro-galvanized?

Because of their extremely high hardness (39-44 HRC), Class 12.9 fasteners are highly susceptible to hydrogen embrittlement. Therefore, traditional electro-plating (like zinc plating) is generally discouraged unless strictly controlled baking procedures are applied immediately after plating to outgas the trapped hydrogen.

ISO 898-1 Class 12.9