Macroscopic Examination

Item No.: 00144
Description
Description

MACROSCOPIC EXAMINATION

MACROETCH, GRAIN FLOW, SURFACE CONDITION & MORE

Zhejiang Guojian Testing Technology Co., Ltd (CCT) , located in China, provides a range of macroscopic examination services performed by their team of experienced metallurgical engineers. Macroscopic examination, also known as macro test or macro examination, involves the evaluation of a test sample's quality and consistency using low or no magnification. This technique can be used to assess various macrostructural features of metals, including grain flow, cracks, and porosity.

Zhejiang Guojian Testing Technology Co., Ltd (CCT)  CAPABILITIES

· Macroetching (ASTM E340)

· Grain Flow

· Weld Qualification

· Surface Condition

· Surface Finish

· Digital Imaging

At Zhejiang Guojian Testing Technology Co., Ltd (CCT) , our metallurgical engineering team prepares the macro samples by performing cutting, grinding, polishing, and etching. Once prepared, the macroscopic examination is carried out, and the findings are documented using digital imaging. This allows customers to receive a visual image of their test report or a digital file that can be easily shared via email.

STANDARDS/SPECIFICATIONS

· ASME Sect. IX

· ASTM E340

· ASTM E381

Get in touch with us to discuss your materials and specific requirements for macroscopic examination. We offer macro examination services for specimens exposed to passivation, salt spray, case depth, and other testing. Additionally, we frequently perform macroscopic examination of welds, which can reveal internal discontinuities, weld profile, extent of penetration, and other properties that are important for weld procedure qualification or welder qualification.

THE TEST PROCESS

Preparing the test sample to specification is a crucial step before macroscopic examination can be carried out. It involves cutting, grinding, and polishing the sample. Often, etching is required after the sample has been prepared, which involves a chemical reaction on the surface of the sample to reveal its flow properties. The sample can be in the form of ingots, castings, plates, bars, sheets or finished products.

Macro examination can be carried out on the transverse or longitudinal cross-section of the test sample. The sample is viewed with the naked eye or at low magnification, usually not exceeding 10 times.

ASTM E340 specifies the macroetch test, which involves controlled surface etching of a metal or alloy sample to reveal its structure, such as grain flow lines and ingot patterns. These features are visible at low magnification and can provide insight into the material's manufacturing process, including the manner in which the metal flowed during forming.



Q: What does your company do?
A: We have been focusing on the inspection of parts and Metallic materials for more than 20 years.


Q: What is the price of testing?
A: The specific cost should be quoted according to your sample quantity, test items and test standards. It is convenient for you to leave your contact information, and I will ask the engineer in charge of this field to make a quotation for you.


Q: Where is your company?
A: Our headquarter is in Zhejiang,China, and we have offices all over the country.
Send your message to us
please select your country
  • Afghanistan
  • Aland Islands
  • Albania
  • Algeria
  • American Samoa
  • Andorra
  • Angola
  • Anguilla
  • Antigua and Barbuda
  • Argentina
  • Armenia
  • Aruba
  • Australia
  • Austria
  • Azerbaijan
  • Bahamas
  • Bahrain
  • Bangladesh
  • Barbados
  • Belarus
  • Belgium
  • Belize
  • Benin
  • Bermuda
  • Bhutan
  • Bolivia
  • Bosnia and Herzegovina
  • Botswana
  • Bouvet Island
  • Brazil
  • British Indian Ocean Territory
  • British Virgin Islands
  • Brunei Darussalam
  • Bulgaria
  • Burkina Faso
  • Burundi
  • Cambodia
  • Cameroon
  • Canada
  • Cape Verde
  • Caribbean Netherlands
  • Cayman Islands
  • Central African Republic
  • Chad
  • Chile
  • China
  • Christmas Island
  • Cocos Islands
  • Colombia
  • Comoros
  • Congo
  • Cook Islands
  • Costa Rica
  • Cote D'ivoire
  • Cuba
  • Curaçao
  • Cyprus
  • Czech Republic
  • Democratic People's Republic of Korea
  • Democratic Republic of the Congo
  • Denmark
  • Djibouti
  • Dominica
  • East Timor
  • Ecuador
  • Egypt
  • El Salvador
  • Equatorial Guinea
  • Eritrea
  • Estonia
  • Ethiopia
  • Falkland Islands
  • Faroe Islands
  • Fiji
  • Finland
  • France
  • French Guiana
  • French Polynesia
  • French Southern Territories
  • Gabon
  • Gambia
  • Georgia
  • Germany
  • Ghana
  • Gibraltar
  • Greece
  • Greenland
  • Grenada
  • Guadeloupe
  • Guam
  • Guatemala
  • Guernsey
  • Guinea
  • Guinea-Bissau
  • Guyana
  • Haiti
  • Heard Island and Mcdonald Islands
  • Honduras
  • Hong Kong, China
  • Hungary
  • Iceland
  • India
  • Indonesia
  • Iran
  • Iraq
  • Ireland
  • Isle of Man
  • Israel
  • Italy
  • Jamaica
  • Japan
  • Jordan
  • Kazakhstan
  • Kenya
  • Kiribati
  • Korea
  • Kosovo
  • Kuwait
  • Kyrgyzstan
  • Laos
  • Latvia
  • Lebanon
  • Lesotho
  • Liberia
  • Liechtenstein
  • Lithuania
  • Luxembourg
  • Macau, China
  • Macedonia
  • Madagascar
  • Malawi
  • Malaysia
  • Maldives
  • Mali
  • Malta
  • Marshall Islands
  • Martinique
  • Mauritania
  • Mauritius
  • Mayotte
  • Mexico
  • Micronesia
  • Moldova
  • Monaco
  • Mongolia
  • Montenegro
  • Montserrat
  • Morocco
  • Mozambique
  • Myanmar
  • Namibia
  • Nauru
  • Nepal
  • Netherlands
  • Netherlands Antilles
  • New Caledonia
  • New Zealand
  • Nicaragua
  • Niger
  • Nigeria
  • Niue
  • Norfolk Island
  • Northern Mariana Islands
  • Norway
  • Oman
  • Pakistan
  • Palau
  • Palestine
  • Panama
  • Papua New Guinea
  • Paraguay
  • Peru
  • Philippines
  • Pitcairn Islands
  • Poland
  • Portugal
  • Puerto Rico
  • Qatar
  • Reunion
  • Romania
  • Russia
  • Rwanda
  • Saint Barthélemy
  • Saint Helena
  • Saint Kitts and Nevis
  • Saint Lucia
  • Saint Martin
  • Saint Pierre and Miquelon
  • Saint Vincent and the Grenadines
  • San Marino
  • Sao Tome and Principe
  • Saudi Arabia
  • Senegal
  • Serbia
  • Seychelles
  • Sierra Leone
  • Singapore
  • Sint Maarten
  • Slovakia
  • Slovenia
  • Solomon Islands
  • Somalia
  • South Africa
  • South Georgia and The South Sandwich Islands
  • Spain
  • Sri Lanka
  • State of Libya
  • Sudan
  • Suriname
  • Svalbard and Jan Mayen
  • Swaziland
  • Sweden
  • Switzerland
  • Syrian Arab Republic
  • TaiWan, China
  • Tajikistan
  • Tanzania
  • Thailand
  • The Republic of Croatia
  • Togo
  • Tokelau
  • Tonga
  • Trinidad and Tobago
  • Tunisia
  • Turkey
  • Turkmenistan
  • Turks and Caicos Islands
  • Tuvalu
  • Uganda
  • Ukraine
  • United Arab Emirates
  • United Kingdom
  • United States
  • United States Minor Outlying Islands
  • Uruguay
  • US Virgin Islands
  • Uzbekistan
  • Vanuatu
  • Vatican City State
  • Venezuela
  • Vietnam
  • Wallis and Futuna Islands
  • Western Sahara
  • Western Samoa
  • Yemen
  • Zambia
  • Zimbabwe
ver_code