Metal Alloys Lecture 15 Dr Greg Heness How can you tell others exactly which kind of material you want? What do these codes mean? AISI 1020 steel ASTM A 29 grade 1020 steel UNS G10200 SAE 1006 6061-T6 3003-H38 Some Specifications applicable to Steel Products and other Metals Steels Effect on strength The Most Widely Used System for Designating Steels SAE- AISI Wrought Aluminium Alloys – Aluminum Association designation system Cast Aluminium Alloy Designations Some Specifications applicable to Steel Products and other Metals AS Standards Australia Standards Australia Standards Australia Standards Australia SAE SAE SAE SAE- - -AISI AISI AISI AISI Society of Automotive Engineers Society of Automotive Engineers Society of Automotive Engineers Society of Automotive Engineers – – – American American American American Iron and Steel Institute Iron and Steel Institute Iron and Steel Institute Iron and Steel Institute ASTM ASTM ASTM ASTM (UNS) (UNS) (UNS) (UNS) American Society for Testing and Materials American Society for Testing and Materials American Society for Testing and Materials American Society for Testing and Materials ( ( ( www.astm.org www.astm.org www.astm.org www.astm.org ) ) ) ASME ASME ASME ASME American Society of Mechanical Engineers American Society of Mechanical Engineers American Society of Mechanical Engineers American Society of Mechanical Engineers MIL MIL MIL MIL U.S. Department of Defense U.S. Department of Defense U.S. Department of Defense U.S. Department of Defense AMS AMS AMS AMS Aerospace Materials Specification Aerospace Materials Specification Aerospace Materials Specification Aerospace Materials Specification BS BS BS BS British Standards Institution British Standards Institution British Standards Institution British Standards Institution ( ( (http://www.bsi-global.com/index.xalter ) ) ) EN EN EN EN European Committee for Standardization European Committee for Standardization European Committee for Standardization European Committee for Standardization ( ( ( http://www.cenorm.be http://www.cenorm.be http://www.cenorm.be http://www.cenorm.be ) ) )
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Metal Alloys
Lecture 15 Dr Greg Heness
How can you tell others exactly which kind of material you
want?
What do these codes mean?
AISI 1020 steel
ASTM A 29 grade 1020 steel
UNS G10200
SAE 1006
6061-T6
3003-H38
� Some Specifications applicable to Steel Products and
other Metals
� Steels
� Effect on strength
� The Most Widely Used System for Designating Steels SAE-
AISI
� Wrought Aluminium Alloys – Aluminum Association
designation system
� Cast Aluminium Alloy Designations
Some Specifications applicable to Steel Products and other Metals
AS Standards AustraliaStandards AustraliaStandards AustraliaStandards Australia
SAESAESAESAE----AISIAISIAISIAISI Society of Automotive Engineers Society of Automotive Engineers Society of Automotive Engineers Society of Automotive Engineers –––– American American American American Iron and Steel InstituteIron and Steel InstituteIron and Steel InstituteIron and Steel Institute
ASTMASTMASTMASTM(UNS)(UNS)(UNS)(UNS)
American Society for Testing and Materials American Society for Testing and Materials American Society for Testing and Materials American Society for Testing and Materials ((((www.astm.orgwww.astm.orgwww.astm.orgwww.astm.org))))
ASMEASMEASMEASME American Society of Mechanical EngineersAmerican Society of Mechanical EngineersAmerican Society of Mechanical EngineersAmerican Society of Mechanical EngineersMILMILMILMIL U.S. Department of DefenseU.S. Department of DefenseU.S. Department of DefenseU.S. Department of DefenseAMSAMSAMSAMS Aerospace Materials SpecificationAerospace Materials SpecificationAerospace Materials SpecificationAerospace Materials SpecificationBSBSBSBS British Standards InstitutionBritish Standards InstitutionBritish Standards InstitutionBritish Standards Institution
((((http://www.bsi-global.com/index.xalter))))EN EN EN EN European Committee for Standardization European Committee for Standardization European Committee for Standardization European Committee for Standardization
2XXX Nickel steels5 % Nickel increases the tensile strength without reducing ductility.8 to 12 % Nickel increases the resistance to low temperature impact15 to 25 % Nickel (along with Al, Cu and Co) develop high magnetic properties. (Alnicometals)25 to 35 % Nickel create resistance to corrosion at elevated temperatures.
3XXX Nickel-chromium steelsThese steels are tough and ductile and exhibit high wear resistance , hardenability and high
resistance to corrosion.
4XXX Molybdenum steelsMolybdenum is a strong carbide former. It has a strong effect on hardenability and high
temperature hardness. Molybdenum also increases the tensile strength of low carbon steels.
5XXX Chromium steelsChromium is a ferrite strengthener in low carbon steels. It increases the core toughness and the
wear resistnace of the case in carburized steels.
86XX87XX93XX94XX97XX98XX
Triple Alloy steels which include Nickel (Ni), Chromium (Cr), and Molybdenum (Mo).These steels exhibit high strength and also high strength to weight ratio, good corrosion resistance.