All data is for information only------(<---links)
	PRODUCT DATA of AA7175-T736

Material	AA7175-T736
General Information	7175 is a high strength, heat treatable, forging alloy. It has an excellent combination of toughness and strength, similar to 7075 alloy except that the 7175 version has superior toughness and tensile strength.
Processing and Assembly	Solution heat treated and then artificially overaged (between T73 and T76 (now T74)
Precautions	data from ASM. Not for design
Chemical Composition	Al-5.6Zn-2.5Mg-1.6Cu-0.23Cr

	EXPERIENCE IN PRACTICE

Development Status	Commercial Product
Equivalent Designations	AA 7175
Space Experience	Good

	PHYSICAL PROPERTIES

Crystal Structure	Face centered cubic (fcc)
Magnetic Properties	Nonmagnetic

	ELASTIC PROPERTIES

Tensile Modulus	72 GPa
Poisson Ratio	0.33

	RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY

General Corrosion Status	Requires specific corrosion protection
Stress Corrosion Status	Moderate Resistance to SCC: Table 2 Remark: Requires Stress corrosion evaluation form Data Quality: Design Data
Bimetallic Corrosion	Can be used in a non-controlled environment: Al alloys, Cd Can be used in a clean room environment: Mg, Sn-Pb alloys (all), Sn, Pb, Zn, Be Needs specific measures: All others Test:ECSS-Q-ST-70C Rev.1 Table 5.1 Data Quality: Design Data
Machinability	The alloy is machinable. However no specific comments are available. Consult the supplier.
Aging	This is an age hardenable alloy.

	SPECIAL RECOMMENDATIONS

Lessons Learned

In some cases where the Zn content is at the high end of the composition range, this alloy responds poorly to black anodising.