ASTM A194 Grade 7 Nuts MTC Certificate Sample – Download Free PDF

ASTM A194 Grade 7 Heavy Hex Nuts Sample MTC Certificate

Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for Alloy Steel Heavy Hex Nuts (ASTM A194 Grade 7). Inspect the exact documentation your QA and engineering teams will receive with every Ananka Fasteners order.

ISO 9001-2015 EN 10204 3.1 ASTM A194 GRADE 7 AISI 4140/4142

What's Inside This A194 Gr 7 MTC Certificate

This sample mill test certificate mirrors the rigorous QA documentation package standard for high-strength, low-temperature alloy steel heavy hex nuts, verifying critical chemical alloying elements and heat-treated mechanical properties.

Full Traceability: Certified with TC No.: SN08/26-XX and corresponding ASTM specifications[cite: 1].
Alloy Material Chemistry: Detailed elemental analysis including Chromium (0.80–1.10%) and Molybdenum (0.15–0.25%) to ensure high hardenability and creep resistance[cite: 1].
Heat Treatment Tracking: Fully documented liquid quenching in oil followed by stress-relief tempering to guarantee uniform microstructure[cite: 1].
Proof Load Verification: Comprehensive axial load testing verifying the high proof strength mandated for Grade 7 heavy hex nuts[cite: 1].
Rockwell Hardness Compliance: Precise tracking of HRC hardness ensuring values remain within the specified 24 to 35 HRC envelope[cite: 1].

ASTM A194 Grade 7 EN 10204 3.1 Sample Material Test Certificate preview

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[cite: 1].

Live Preview: ASTM A194 Grade 7 Data

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

TC Number

SN08/26-XX

TC Date

23.06.20XX

Material Spec

ASTM A194 GRADE 7 ED-2026

Bar Shape / Size

Round Bar / 22 mm

Dimensions / Item

Hex Nut 5/8"-11UNC

Heat Treatment

Oil Quenched / Air Cool

Chemical Composition %

C	Mn	P	S	Si	Cr	Mo
0.41	0.83	0.017	0.011	0.21	1.03	0.18
0.38 - 0.48	0.75 - 1.00	Max: 0.035	Max: 0.040	0.15 - 0.35	0.80 - 1.10	0.15 - 0.25

Mechanical Properties

PROOF LOAD (kN)	HARDNESS (HRC)
151.34	27, 29, 30
Min: 150.79	Min: 24 / Max: 35

Download Full Report (PDF)

View Our Datasheet: View ASTM A194 Grade 7 Datasheet →

Standard References & Compliance

Our MTC certificates map to demanding sub-zero and pressure vessel fastener requirements. The test reports confirm compliance with ASME/ASTM A194 Grade 7 with respect to chemical and mechanical tests carried out[cite: 1].

Standard / Requirement	Confirmation on Certificate
Visual & Dimensional Inspection	100% inspection carried out & found satisfactory in accordance with ASME standards[cite: 1].
Heat Treatment Control	Liquid quenched in oil and tempered to ensure required notch toughness and strength[cite: 1].
Proof Load Performance	Full axial proof load tested and confirmed to satisfy specified kN ratings[cite: 1].
Rockwell Hardness Limits	3-point HRC hardness test verified within 24 to 35 HRC specification boundaries[cite: 1].

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[cite: 1].

Documentation Standard

✓ EN 10204-2004: 3.1 Standard[cite: 1]
✓ Full Chemical & Mechanical Traceability[cite: 1]
✓ Certified ISO 9001: 2015 Company[cite: 1]

Manufacturing Process

✓ Hot Forged / Cold Formed[cite: 1]
✓ Oil Quenched & Tempered Heat Treatment[cite: 1]

Testing Conditions

✓ Proof load & HRC hardness testing verified[cite: 1]
✓ 100% visual and dimensional inspection[cite: 1]

Technical FAQs — ASTM A194 Grade 7 MTC Certificate

What alloy steel chemistry defines ASTM A194 Grade 7?

Grade 7 nuts are fabricated from AISI 4140/4142 alloy steel containing 0.80–1.10% Chromium and 0.15–0.25% Molybdenum[cite: 1]. These alloying additions provide the necessary hardenability and high-strength capabilities required for critical applications[cite: 1].

Why is liquid oil quenching mandatory for Grade 7 nuts?

Unlike carbon steel grades, Grade 7 alloy steel nuts mandate liquid quenching in oil followed by tempering to achieve a fully tempered martensitic structure[cite: 1]. This ensures optimum impact strength and ductility, especially in low-temperature service conditions[cite: 1].

What are the hardness requirements for ASTM A194 Grade 7 on the test report?

The standard specifies a Rockwell hardness range between 24 HRC and 35 HRC[cite: 1]. Testing records verify multi-point surface and core readings (e.g., 27, 29, 30 HRC) to ensure uniform heat treatment without localized brittle spots[cite: 1].

ASTM A194 GRADE 7 – MTC