17-4 Stainless Steel Round Bar

17-4 stainless steel bar, also known as UNS S17400, 17-4 PH and Grade 630, is one of the original precipitation hardened grades developed in the 50’s. Primarily comprised of 17% chromium, 4% nickel, 4% copper, with the balance being iron. There are also trace amounts of manganese, phosphorus, sulfur, silicon, columbium (or niobium) and tantalum. Stainless Steel 17-4 PH delivers an excellent combination of oxidation and corrosion resistance. Other characteristics include high strength, toughness, and quality mechanical properties at temperatures up to 600° F. Engineers and designers frequently choose Stainless Steel 17-4 PH due to its high strength and superior corrosion resistance when compared to many other stainless steels

CHEMISTRY ANALYSIS

C	MN	P	S	SI	CR	NI	MO	CU	OTHER	M/NM
.07	1.	.04	.03	1.	15. – 17.5	3. – 5.	3. – 5.		Cb + Ta = .15 – .45	M

BAR SPECIFICATIONS

UNS	TYPE	AMS	ASTM	FEDERAL	CHARACTERISTICS
S17400	17-4 PH	5622 5643	A-564	–	Combines excellent corrosion resistance, high strength/hardness, low temperature hardening and good fabricating characteristics.

Industries that use 17-4 PH include:

• Aerospace

• Chemical

• Food processing

• General metal working

• Paper industries

• Petrochemical

• Petroleum

Products partially or completely constructed of 17-4 PH include:

• Air spray guns

• Bearings

• Boat fittings

• Castings

• Dental components

• Fasteners

• Gears

• Golf club heads

• Hardware

• Load cells

• Molding dies

• Nuclear waste casks

• Precision rifle barrels

• Pressure sensor diaphragm

• Propeller shafts

• Pump impeller shafts

• Sailboat self steering systems

• Springs

• Turbine blades

• Valves

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