Quality standards

M&I Materials is proud of the wide range of company and product awards, approvals and certifications that it has worked hard to achieve and maintain. Together they assure you of the pedigree of our company, systems and products.

Quality Management Standard – Lloyds Register ISO 9001

M&I Materials Ltd’s management system has been certified by Lloyd’s Register Quality Assurance Ltd to the latest international quality standard ISO 9001:2015.

The standard is based on a number of quality management principles including a strong customer focus, the motivation and implication of top management, the process approach and continual improvement. Using ISO 9001 helps ensure that customers get consistent, good quality products and services, which in turn brings many business benefits.

Environmental Management Standard – Lloyds Register ISO 14001

M&I Materials Ltd’s management system has been certified by Lloyd’s Register Quality Assurance Ltd to the latest international environmental standard ISO 14001:2015.

ISO 14001 is a certification of an environmental management system, which requires an organisation to manage, measure, improve and communicate its environmental program in a systematic way. Only those companies with excellent environmental programs qualify for this globally recognised certification.

The Queen’s Award for Enterprise: International Trade 2009

The Queen’s Awards are the UK’s most prestigious awards for business performance and represent the highest honour that can be bestowed on a company. The Award made to M&I Materials acknowledges its outstanding achievement in international trade.

Aerospace standards

The Wolfmet tungsten alloy production unit of M&I Materials is accredited to aerospace standard, AS9100 Rev D (BS EN 9100). In addition Wolfmet tungsten can be supplied in accordance with aerospace standards ASTM B777-15 or AMS 7725E.

AS9100 Rev D

This is the single common quality management standard for the aerospace industry. It is used and supported by the World’s leading aerospace companies and throughout their supply chains. AS9100 Rev D can be used by organisations across the aerospace sector, including design, manufacturing, maintenance and distributing companies.

AMS 7725

Issued by the SAE, AMS 7725 is an internationally recognised specification that outlines the conditions tungsten alloy must achieve to meet the industry standard. The guidelines consider four categories of tungsten alloy based on their tungsten percentage, magnetic and non-magnetic alloys, tensile strength, microstructure and condition. The standard also outlines specific conditions for the annealing process, as well as rules covering quality assurance and delivery.


ASTM International’s ASTM B777 standard establishes the requirements for high-density tungsten base metal produced by consolidating metal powder mixtures. In addition to defining the chemical, physical and mechanical properties of tungsten alloy, it also looks at composition requirements for tungsten alloy grades.