Impact DOM mechanical tubing is manufactured from ERW hollows and cold drawn through a die and over a mandrel, improving surface finish, mechanical properties and dimensional accuracy of both outside and inside diameters.
	Impact 520 exhibits impact values almost 12 times better than 1026 at room temperature, and at -4ºF provides approximately a nine-fold improvement. This advantage is especially beneficial in low temperature and other extreme conditions.
	Impact 620, a micro-alloy grade, meets challenges of the most severe operating environments, where both increased strength and thoughness are critical.
	ATP 90, another PTC Alliance exclusive, applies a different process to the 520 chemistry to achieve higher mechanical properties for applications in which reduced weight and increased strength are important.
	Impact Properties Grade 1026 vs. Impact 520

Typical Mechanical Properties (Minimum Values)
	Grades		Yield Strength				Tensil Strength					% Elongation		RB
				KSI		N/mm		KSI		N/Mpa
	IMPACT 520			75		517		85		585		18		85
	ATP90			90		621		100		690		15		92
	IMPACT 620			90		621		100		690		15		92
	1026*			65		448		75		517		10		80
*Shown for reference only

Guaranteed Impact Values (upon request) Impacts at -20ºC (-4ºF)
	Grades		Size (mm x mm)	Avg. of 3				Min. Value
					Ft.#'s		Joules		Ft.#'s		Joules
	IMPACT 520		10 x 10		20		27		10		14
			10 x 7.5		16		22		10		14
			10 x 6.6		14.8		20		5		7
			10 x 5.0		12		16		5		7

Typical Impact Values
	Grades		Size (mm x mm)	Avg. of 3				Min. Value
					Ft.#'s		Joules		Ft.#'s		Joules
	IMPACT 620		10 x 10		10		13.5		8		11
			10 x 7.5		8		10.8		6		8
			10 x 6.6		7.4		10		5.5		7
			10 x 5.0		6		8.1		4.5		6