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Precipitation Hardening Special Alloys Capillary SUS630 / S17400 High Hardness

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Precipitation Hardening Special Alloys Capillary SUS630 / S17400 High Hardness

Precipitation Hardening Special Alloys Capillary SUS630 / S17400 High Hardness
Precipitation Hardening Special Alloys Capillary SUS630 / S17400 High Hardness Precipitation Hardening Special Alloys Capillary SUS630 / S17400 High Hardness Precipitation Hardening Special Alloys Capillary SUS630 / S17400 High Hardness Precipitation Hardening Special Alloys Capillary SUS630 / S17400 High Hardness Precipitation Hardening Special Alloys Capillary SUS630 / S17400 High Hardness

Large Image :  Precipitation Hardening Special Alloys Capillary SUS630 / S17400 High Hardness

Product Details:
Place of Origin: CMMC in CHINA
Brand Name: CMMC
Certification: ISO 13485, ISO 9001 etc.
Model Number: As per specification and drawing
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: Water prevent, seaworthy transport, plastic box
Delivery Time: 60-90 days
Payment Terms: D/P, L/C, T/T
Supply Ability: 20 metric tons per month

Precipitation Hardening Special Alloys Capillary SUS630 / S17400 High Hardness

Material: Stainless Steel S17400, 17-4PH, SUS 630, A Chromium-nickel-copper Precipitation Hardening Martensitic Stainless Steel
High Light:

seamless capillary


welded capillary

17-4PH, SUS630, S17400 capillary for medical tube, electronic microtube, optical fiber accessories etc



Martensitic precipitated hardened stainless steel S17400, 17-4PH, SUS 630 welded or seamless capillary.



0Cr17Ni4Cu4Nb(GB/T), AISI630(ASTM), W.Nr. 1.4542, X5CrNiCuNb16-4(DIN)



(1) Medical tubes such as syringes for injections, puncture syringes.

(2) All kinds of industrial tubes, small precision stainless steel tubes, dispensing syringes.

(3) Temperature guide tube, electronic thermometer, thermocouple protection tube, barbecue temperature probe tube, instrument protection tube, sensor tube, barbecue rub tube, thermostat tube, instrument tube, thermometer stainless steel tube, microbiological engineering tube.

(4) Core protector, pen holder

(5) Various electronic microtubes, optical fiber accessories, optical mixer

(6) Horological industry, T-bars with studs or screws, watch belt fittings, gem punches needle

(7) All kinds of antenna tubes, automobile tail antenna tubes, pull rod antenna tubes, stretch rod, mobile phone stretch antenna tubes, miniature antenna tubes, all kinds of stainless steel antenna.

(8) Stainless steel tubes for laser engraving equipment

(9) Fishing tackle pipe, fishing rod pipe

(10) All kinds of food and beverage industry pipe, feeding pipe

(11) Various stylus tubes, cell phone stylus, computer stylus tubes



17-4PH is a chromium-nickel-copper precipitation hardening martensitic stainless steel used for applications requiring high strength and hardness along with a moderate level of corrosion resistance. High strength is maintained to approximately 600℉ (316℃). This alloy is designated Grade or Type 630 in several specifications.

17-4PH is martensitic in structure in the annealed condition and is further strengthened by a low temperature treatment which precipitates a copper containing phase in the alloy. In comparison to many alloys in the precipitation hardening family, the S17400 alloy requires a simple heat treatment; a one step process conducted at a temperature in the range 900℉ (482℃) to 1150℉(621℃) depending on the combination of strength and toughness desired. A wide range of properties can be produced by this one step heat treatment. Heat treatment in the 900℉ (482℃) range produces highest strength, although slightly less than that of alloys like S17700 or S15700. The latter precipitation hardening stainless steels generally require more steps to complete heat treatment.



Fe Ni Nb Cr Cu Mo Ta
Bal. 3.0-5.0 5xC-0.45 15.5-17.5 3.0-5.0 ≤0.60 ≤0.45
C Mn Si P S Nb+Ta  
≤0.07 ≤1.00 ≤0.70 ≤0.035 ≤0.030 0.15-0.45  



Density: 7.86 g/cm³ (0.284 lb/in³)

Melting point:1400-1440℃



Room temperature tensile properties can vary substantially with heat treatment in the 900℉(482℃) to 1150℉(621℃) range. Values shown below are typical room temperature properties that may be expected for various precipitation hardening heat treatments as well as for the 1950℉(1066℃) solution heat treatment.

Condition A H900 H1075 H1150
0.2% Offset Yield strength ksi 110 180 135 125
MPa 760 1,240 930 860
Ultimate tensile strength ksi 150 195 155 145
MPa 1,030 1,340 1,070 1,000
Elongation (percentage in 2") 8 10 10 10
Hardness rockwell C scale

38 max.

(363HB max.)









17-4PH has superior corrosion resistance to any other standard hardened stainless steel.

Tests have shown that the corrosion resistance of 17-4PH is comparable to that of Type 304 stainless steel in most media. In general, the corrosion resistance of 17-4PH alloy is superior to that of the hardenable 400 series stainless steels. As with other precipitation hardening stainless steels, 17-4PH is more susceptible to stress corrosion cracking at peak strength. Consequently, in applications where chloride stress corrosion cracking is a possibility, the material should be precipitation hardened to produce the lowest hardness compatible with the intended end use. This is done by heat treating at the highest temperature which will produce suitable minimum properties.

Material in the annealed condition should not generally be put into service. In this condition, the material has an untempered martensite structure and is less ductile than aged material. The untempered martensite may be subject to unpredictable brittle fractures. In corrosive environments, the untempered martensite is more sensitive to embrittling phenomena such as hydrogen embrittlement than material that has had one of the precipitation hardening heat treatments. Similarly, untempered martensite is more sensitive to chloride stress corrosion cracking than material in which the martensite has been tempered.

This alloy is susceptible to corrosion or crack corrosion in static seawater.

It has the same resistance to corrosion in the petrochemicalm, food processing and paper industry as the 304L grade.



The oxidation resistance of the 17-4PH is superior to that of 12 percent chromium alloys like Type 410, but slightly inferior to that of Type 430. Precipitation hardening will produce surface oxidation.



The 17-4PH is furnished in the annealed condition. This is also called the solution heat treated condition, or Condition A. Annealing is conducted by heat treating at approximately 1900℉ (1040℃) to 1950℉ (1065℃) and cooling to room temperature. In this condition, the material possesses a martensitic structure. As a martensitic structure, the 17-4PH alloy possesses a relatively high strength and hardness in the annealed condition. The strength and hardness of the material is generally somewhat lower in the H1150 over aged condition.

The heat treatments used for the 17-4PH precipitation hardening stainless steel are summarized below.

Condition Temperature Time
H900 900±10℉(482±5℃) 60 min. ± 5 min.
H925 925±10℉(496±5℃) 4 hrs ± 0.25 hr
H1025 1025±10℉(552±5℃) 4 hrs ± 0.25 hr
H1075 1075±10℉(579±5℃) 4 hrs ± 0.25 hr
H1100 1100±10℉(593±5℃) 4 hrs ± 0.25 hr
H1150 1150±10℉(621±5℃) 4 hrs ± 0.25 hr
Condition H1150-M from SA693 1400±10℉(760±5℃) 2 Hours+ 1150±10℉ 4 Hours



Tube blank → Peeling → Blanking → Heating → Hot piercing → Cooling → Finishing → Pickling → Lubricating

→ Cold rolling → Degrease → Heat treatment → Straightening → Tube cutting → Pickling → Inspection → Packing.


Tube blank → Peeling → Blanking → Inner hole drilling → Lubricating → Cold rolling or drawing → Degrease

→ Bright annealing → Straightening → ID and OD surface polishing → Inspection → Packing.



Permissible variations in dimensions

OD range OD ID WT
In. mm In. mm ±%
Up to, but not including 3/32(0.094) in. (2.38 mm) +0.002
3/32 (0.094) in. (2.38 mm) but not including 3/16 (0.188)in. (4.76 mm) +0.003
3/16 to, but not including, 1/2(0.500) in. (12.70 mm) +0.004



A section of tube approximately 4 in.(101.6 mm) in length shall stand being flared with a tool having a 60°included angle until the tube at the mouth of the flare has been expanded to the following percentages without cracking or showing flaws:

Ratio of inside diameter to outside Diameter Minimum expansion of inside diameter, %
0.9 21
0.8 22
0.7 25
0.6 30
0.5 39
0.4 51
0.3 68


14 Hydrostatic, Air Underwater Pressure Test, or Nondestructive Electric Test

Each tube shall be subjected to the hydrostatic test, air underwater pressure test, or nondestructive electric test. The

type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.

Hydrostatic Test

Each tube shall be subjected to a hydrostatic test at a test pressure not exceeding 1000 psi (6.89MPa).


Air Underwater Pressure Test

Each tube shall be subjected to an air underwater pressure test, at a test pressure as given by the following equation or 500 psi (3.4 MPa), whichever is less: P=2St/D


P = air pressure, psi or MPa

S = allowable fiber stress of 16,000 psi (110.3 MPa),

t = specified wall thickness, in. or mm, and

D = specified outside diameter, in. or mm.


Nondestructive Electric Test

Each tube shall be subjected to a nondestructive electric test that is capable of detecting imperfections with a

depth exceeding 10 % of the wall thickness or 0.002 in. (0.05mm), whichever is greater. Testing will not be required on sizes under 0.125 in. (3.18 mm) in outside diameter. However, at the option of the purchaser, tubing to be drawn to a diameter under 0.125 in. may be tested while in the range from 0.156 in. (3.97mm) to 0.125 in. outside diameter, and any defects that are found shall be culled out before any further reductions are made.



OD:0.25-8.0 mm

WT:0.065-3.0 mm

Concentricity: good


Surface:2B, BA, Mirror, sandblasted surface, passive surface.

Annealing surface,fine drawing bright surface Ra≤0.8μm,finely polished ID and OD Ra≤0.2-0.4μm. (possible Ra 0.1μm at request).



GB/T 3090 Stainless steel small diameter seamless steel tube

GBT 18457 Stainless steel needle for manufacturing medical machinery

GB 4234 Stainless steel for surgical implants

YBT 4513-2017 Welded stainless steel tubes for medical gases and vacuums

ASTM A632 Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing (Small-Diameter) for General Service

ISO 5832-1-2016 Implants for surgery metallic materials - Part 1 Wrought stainless steel

ISO 9626-2016 Stainless steel needle tubing for the manufacture of medical devices requirements and test methods

SAE AMS 5643R Steel Corrosion Resistant Bar Wire Forging Tubing and Rings (S17400)



(1) More than 50 years experience of research and develop in high temperature alloy, corrosion resistance alloy, precision alloy, refractory alloy, rare metal and precious metal material and products.
(2) 6 state key laboratories and calibration center.
(3) Patented technologies.

(4) High performance.



Minimum order quantity Negotiable
Price Negotiable
Packaging details Water prevent, seaworthy transport, plastic box
Mark As per order
Delivery time 60-90 days
Payment terms T/T, L/C at sight, D/P
Supply ability 20 metric tons / Month


Contact Details
China Machinery Metal Jiangsu Co., Ltd.

Contact Person: Mr. lian

Tel: 86-13913685671

Fax: 86-510-86181887

Send your inquiry directly to us (0 / 3000)