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17-4 STAINLESS STEEL– AMS 5643 – AISI 630 – UNS S17400

 

17-4 STAINLESS STEEL– AMS 5643 – AISI 630 – UNS S17400

TITANIUM SHEETS AND PLATES

It can be further hardened to various strength levels by a single precipitation hardening heat treatment that minimizes scaling and distortion.

17-4 Stainless is a martensitic chromium-nickel-copper stainless steel in the solution treated (annealed) condition. Its strength and moderate corrosion resistant properties are maintained in service temperatures up to the 600° F to 800° F range. The alloy should not be used in the solution treated (annealed) condition.

 

Bars, Wire, and Forgings are usually a single-melt product offered to AMS 5643 for aerospace applications. A CEVM (Consumable Electrode Vacuum Melt) or VAR (Vacuum Arc Remelt) product is specified in AMS 5622. Both specifications require that bars and forgings be restricted to 8” Diameter or less, or 8” least distance between parallel sides. A provision is included to allow larger sizes, provided that the Buyer and Seller agree upon mechanical properties for the size in question.

<<17-4 STAINLESS STEEL– AMS 5643 – AISI 630 – UNS S17400 DATA SHEET>>

Chemical Composition:

Symbol Element Min % Max %
C Carbon 0.07%
Mn Manganese 1.00%
Si Silicon 1.00%
P Phosphorus 0.040%
S Sulfur 0.030%
Cr Chromium 15.00% 17.50%
Ni Nickel 3.00% 5.00%
Cb (Nb) Columbium (Niobium) 5 times Carbon % 0.45%
Cu Copper 3.00% 5.00%
Mo Molybdenum 0.50%

 

17-4 Stainless AMS 5643 Hardness & Minimum Tensile Properties:

For diameters 8” and below (or least distance between parallel sides)

Condition Tensile Yield 0.2% offset Elongation (%in 2″) Reduction of Area Brinell Hardness Rockwell Hardness
H900 190 ksi 170 ksi 10% 40% (35% >3″) 388-444 HB 40-47 HRC
H925 170 ksi 155 ksi 10% 44% (38% >3″) 375-429 HB 38-45 HRC
H1025 155 ksi 145 ksi 12% 45% 331-401 HB 34-42 HRC
H1075 145 ksi 125 ksi 13% 45% 311-375 HB 31-38 HRC
H1100 140 ksi 115 ksi 14% 45% 302-363 HB 30-37 HRC
H1150 135 ksi 105 ksi 16% 50% 277-352 HB 28-37 HRC
Ann 363 max 39 HRC Max

See AMS 5643 Section 3.4.3.2 for Tensile Test and Temperature requirements
17-4 Stainless is not used in the Solution Treated (Annealed) condition

 

17-4 Stainless Applications:

17-4 Stainless is suitable for a wide variety of applications in the commercial, oil and gas, aerospace, and nuclear industries. It’s suitable for intricate parts requiring corrosion resistance and high strength that can be heat treated and welded with minimal distortion due to its precipitation hardening capabilities.

 

Common Trade Names:

17-4 PH

PH17-4

Type 630 Stainless

SAT Type 630

17Cr-4Ni

Custom 630

 

Common Specifications:

AMS 5643

AMS 5643/H1025 for purchase in Solution Treated and Aged to H1025

AMS 5604

ASTM A564 Type 630

ASME SA564

AMS 5825 Welding Wire

AMS 5827

AMS 7474

ASTM A693

ASME SA693

ASTM A705

ASME SA705

 

17-4 Stainless Corrosion Resistance:

17-4 Stainless exhibits superior corrosion resistance compared to hardenable 400-Series Stainless chromium grades such as Type 410 Stainless. It is nearly comparable that of 300-Series Stainless chromium nickel grades such as Type 304 Stainless. 17-4 corrosion resistance can be affected by surface finish and precipitation hardening heat treatment.

 

17-4 Stainless Fabrication:

This grade is readily forged, hot headed, or upset in the range 2050° F and 2200° F, and not below 1850° F. It is usually solution treated after hot work prior to precipitation hardening.

 

17-4 Stainless Machinability:

This material machines well in the Solution Treated (Annealed) condition, and about 50% better in Cond H1150.

 

17-4 Stainless Weldability:

It is readily weldable by commercial processes without being preheated or post-heated, as usually done for 400-Series Stainless grades.

We also supply
MARS190 D6AC AMS 4130
AMS 4340 MOD AMS 4340 AMS 4330 MOD
AMS 9310 AMS 13-8 PH AMS 15-5 PH
AMS 17-4 PH AMS 625 AMS 718
AerMet® 100 Maraging 250 Maraging 300
Maraging 350 Titanium Grade 5 Ti-6Al-4V ELI Titanium

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Founded in 1998, FuShun covers an area of 3000 square meters, annual sales volume of 20000 tons. We are engaged in the manufacture and export of Tool Steel, Nickel Alloy, Stainless Steel and other special steel products…,View more content About Me.

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