1: Brief Introduction Of 17-4PH stainless steel
Alloy 17-4 is a chromium-copper precipitation hardening stainless steel that is used for applications requiring high strength
and a moderate level of corrosion resistance. It is one of the most widely used precipitation hardening grades, as it has high
strength hardness up to about 572°F while demonstrating good corrosion resistance in all heat treated conditions. Alloy 17-4
has adequate resistance to atmospheric corrosion or in diluted acid salts where its corrosion resistance is equivalent to Alloy
304 or 430. Alloy 17-4 can be heat treated to a variety of temperatures to develop a wide range of properties. Its mechanical
properties can be optimized with heat treatment where very high yield strength up to 180 ksi can be achieved. Alloy 17-4
should not be used at temperatures above 572°F or at very low temperatures.
Corrosion Resistance:
★Withstands corrosive attacks better than any of the standard hardenable stainless steels.
★Comparable to Alloy 304 in most media.
★Corrosion resistant in some chemical, petroleum, dairy, and food process industries.
★Subject to crevice or pitting attack if exposed to stagnant sea water for any length of time.
Weldability:
★Successfully welded by most common fusion and resistance methods.
★Should not be joined by oxyacetylene welding.
★Generally no pre-heating required.
★Inter-pass temperature must be limited to 248°F.
★Better toughness is obtained in the weld after a complete heat treatment.
Machinability:
★Can be machined in both solution-treated and precipitation-hardening conditions.
★Machining conditions may vary with hardness of material.
★High-speed tools or preferably carbide tools with standard lubrication are normally used.
Other Grades:
201,202,21-4N,301,302,301L,303,303Se,304,304L,304H,304LN,304N,305,S38400,308,309,309S,310,310s,
316,316L,316H,316Ti,316N,316LN,317,317L,317LMN,317LN,321,321H,347,347H,S3100,S31803,S3205,
S32304,S31200,S31260,S32507,405,409,429,430,430F,434,444,403,410S,410,416,420,420F,431F,440A
440B,440C,440F,610,630,631,632,635,660,Alloy 200,Monel 400 ,Alloy K-500 ,Inconel 600 , Incconel 601,
Inconel 625 , Inconel 718 , Alloy 800 ,Alloy 800H,Alloy 800HT,Inconel 825,Alloy 276, Alloy 20, Alloy 59
Chemical Properties:
| TYPE |
Cr |
Ni |
Cu |
Cb + Ta |
C |
Mn |
P |
S |
Si |
| 17-4 (Alloy 630) |
15.0-17.5 |
3.0-5.0 |
3.0-5.0 |
0.15-0.45 |
0.07 max |
1.0 max |
0.04 max |
0.03 max |
1.0 max |
2:Stainless Steel Coil Process:
3: Packing & Shipping
4: Company Introduction
Audited Supplier 
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