• 17-4 PH Torx Screws

17-4 PH Torx Screws

Brand RAYCHIN

Product origin China

Delivery time 5-35 DAYS

17-4 PH Torx screws are made from a precipitation hardened stainless steel most known for its exceptional strength and its ability to maintain its mechanical properties to 600°F. Compared to 316 stainless steel, 17-4 PH Torx screws yield strength is up over 4 times greater. When compared to Duplex 2205 screws, the yield strength of 17-4 PH can be up to 2-½ times greater.
17-4 Torx screws are available in 8 different aged (precipitation hardened) conditions offering a variety of mechanical properties.

17-4 PH Torx Screws

17-4 PH Torx Screws


17-4 PH Torx screws are made from a precipitation hardened stainless steel most known for its exceptional strength and its ability to maintain its mechanical properties to 600°F. Compared to 316 stainless steel, 17-4 PH Torx screws yield strength is up over 4 times greater. When compared to Duplex 2205 screws, the yield strength of 17-4 PH can be up to 2-½ times greater.

17-4 Torx screws are available in 8 different aged (precipitation hardened) conditions offering a variety of mechanical properties.



An extremely strong precipitation hardened stainless steel

· Well suited for high strength applciaitons

· Up to 4x stronger than 316 stainless steel

· Maintains its mechanical strength up to 600°F

· 17-4PH Chemistry & Specifications

· 17-4PH Torx screw features and benefits

· 17-4PH Datasheet


Resources: 17-4PH Torque Specs

17-4 PH Screw Types: 12 Point ScrewsButton Head Cap ScrewsFlat Head ScrewsHex Cap ScrewsPan Head ScrewsSet ScrewsSocket Head Cap ScrewsTamper Resistant Security ScrewsTorx Screws, Vented Screws


17-4 PH Torx Screw Features and Benefits


17-4 PH Torx screws are characterized by a 6-point star-shaped pattern, also called a star drive, spined socket or hexalobular (ISO 10664). Where Phillips heads were designed to cause the driver to cam-out (prevent overtightening), Torx screws were designed resist cam-out. This feature allows 17-4 PH Torx screws to provide increased torque as well as better torque transfer between driver and fasteners. This feature also helps to reduce wear on driver bits.


17-4 PH Torx Screw Advantages

· Resistant to cam out (process by which a screwdriver slips out of the head)

· 17-4 PH Torx screws are more difficult to strip

· Increased tamper resistance as a star driver isn’t as common

· Driver insert is less susceptible to damage when over torqued than Allen head


17-4PH Chemistry & Specifications

17-4PH Specifications: UNS S17400, AISI 630, ASTM A564-630, Werkstoff 1.4542, AMS 5604 Sheet, Strip and Plate, ASTM A 693 Plate

17-4PH

Fe

Cr

Ni

Cu

Mn

Si

Mo

Nb+Ta

C

P

S

Min%


15.0

3.0

3.0

-

-

-

-

-

-

-

Max%

Bal

17.5

5.0

5.0

1.0

1.0

0.50

0.45

0.07

0.04

0.03




ASTM F593, Grade 630

This specification covers seven groups of stainless steel alloys, with ASTM F593, Grade 630 applying 17-4PH. ASTM F593 Grade 630 covers the requirements for 17-4PH stainless steel bolts, hex cap screws, and studs sized 0.25 to 1.50 inches, inclusive, in nominal diameter. It is intended for common use and for service applications requiring general corrosion resistance.


Full-Size Tests

Machined Specimen Tests

Stainless Steel Alloy Group

Condition

Alloy Mechanical Property Marking

Nominal Diameter (inches)

Tensile Strength (ksi)

Yield Strength (ksi)

Rockwell Hardness

Tensile Strength (ksi)

Yield

   Strength

Elongation  %

7(630)

AH

F593U

1/4 to 1.5 IN

 135 to 170

105

C28 to38

135

105

16


Common 17-4 Fastener Conditions:  Aged Conditions vs Tensile Strength

Aged Condition

Ultimate Tensile (ksi)

Yield Strength at

0.2% Offset (ksi)

Elongation

%

Hardness Rc

H900

200

185

14

40-47

H925

190

175

14

38-45

H1025

170

165

15

35-42

H1075

165

150

16

33-39

H1100

150

135

17

32-38

H115C

145

125

19

28-37

H1150-M

125

85

22

26-36

Annealed

160

145

5

~35




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