General Information

Precipitation hardening alloys of the 17-4 PH and 15-5 PH types achieve their strength by dissolving precipitates by solution annealing. An aging cycle then creates precipitates that strengthen the steel. They are usually characterized by extremely good corrosion resistance.

Alloy	BÖHLER brand	WstNo.	UNS	ISO	AMS	ASTM	Others
17-4 PH	N700	1.4542, 1.4548	S17400	X5CrNiCuNb16-4	5622, 5643	A564, F899	AISI: 630
15-5 PH	N701	1.4545	S15500	X5CrNiCu15-5	5659	–	AISI: XM 12
13-8 Mo	N709	1.4534	–	X3CrNiMoAl13-8-2	5629	A564	–
Alloy 455	N713	1.4543	S45500	X3CrNiCuTiNb12-9			Alloy 455, XM16
Maraging 300	V300	1.6354, ~1.2709	K93160	X2NiCoMo18-9-5	6514
Maraging 250	V250	1.6359, ~1.2706	K92890	X2NiCoMo18-8-5	6512
Maraging 350	V350	1.6356		X2NiCoMoTi18-12	6515
Alloy  465	N765	1.4614 Custom 465	S46500	X1CrNiTiMo11-11, X2CrNiTi12-11	5936	A564, F899
A286	T200	1.4943, 1.4944, 1.4980, 1.2779, 1.3980	S66286	X4NiCrTi25-15, X5NiCrTi26-15	5731, 5732	A660	AISI: 660
Alloy 718 (API)	L718API	2.4668	N07718	NiCr19NbMo/NiCr19Fe19Nb5Mo2	–	–	Nace MR0175 (150ksi)
Alloy 718 (AMS)	L718 AMS	2.4668	N07718	NiCr19NbMo/NiCr19Fe19Nb5Mo3	5662, 5663	B637	–