17-4pH / SUS630 / Alloy 630 Stainless Steel Pipes Tube

• Type: Stainless Steel Pipes
• Standard: AISI, JIS
• Certification: AISI, ASTM
• Model NO.: 17-4PH / 630
• Shape: Round
• Technique: Hot Rolled
• Surface Treatment: Pickling
• Length: 6m or Cutting Any Length as Request
• Other Surface: Ba Ap Ep
• Other Shape: Square, Rectangle
• Transport Package: Wooden Box
• Specification: OD 6-630mm
• Origin: China
• HS Code: 7304319000
• Production Capacity: 500000kgs

Product Description

Hot Rolled SUS630 / 17-4PH / Alloy 630 Stainless Steel Seamless Pipe BA AP SS Hollow Tube

PRODUCTS SPECIFICATION

Products Specification

 

Products Name	Stainless Steel Seamless Pipe
Grade:	304 304L 309S 310S 314 316L 316Ti 321 329 347H 410 2205 2507 904L 254SMO 17-4PH and equal grade in GB JIS EN DIN Standard
Standards:	ASTM A213M-94b ASTM A249M-94a ASTM A269-94a ASTM A312M-94b,ect.
	DIN 17456-85 DIN 17458-85 DIN 17459-92.ect
	JIS G3446-1994 JIS G3448-1997 JIS G3459-1997 JIS G3463-1994,ect.
	GB13296-1991 GB14975-2002 GB14976-2002,ect.
Size:	ND5 - DN400
Length:	6m length or cutting any length as request
Applications:	fluid and gas transport, structure , boiler, heat exchanger, super heater

MATERIAL DESCRIPTION

 

630 Stainless Steel Seamless Tubing - Product Information

*(UNS S17400 / 17-4PH Precipitation-Hardening Stainless Steel)*

 

1. Product Description

630 Seamless Tubing is a martensitic precipitation-hardening stainless steel offering exceptional strength, corrosion resistance, and machinability. The "630" designation (per AMS/UNS) is synonymous with 17-4PH. Supplied in solution-annealed Condition A, it achieves high mechanical properties via low-temperature aging heat treatment (e.g., H900, H1150). Ideal for high-stress, corrosive, and moderate-temperature applications where standard austenitic steels (304/316) lack sufficient strength.

 

2. Key Specifications & Standards

Category	Details
Material Standard	ASTM A564 (Age-Hardening Stainless Steel), AMS 5643, ASTM A511 (Seamless Mechanical Tubing)
UNS Designation	S17400
EN/DIN Equivalent	1.4542 (X5CrNiCuNb16-4)
Common Tempers	Condition A (Solution Annealed), Aged: H900, H1025, H1100, H1150, H1150M

 

3. Chemical Composition (% Weight, Typical)

Element	Cr	Ni	Cu	Nb+Ta	C (max)	Mn (max)	Si (max)	Fe
Content	15.0-17.5	3.0-5.0	3.0-5.0	0.15-0.45	0.07	1.00	1.00	Balance

 

4. Mechanical Properties (Aged Conditions)

Aging Condition	Tensile Strength (min)	Yield Strength (min)	Elongation % (min)	Hardness (HRC)
H900	190 ksi (1310 MPa)	170 ksi (1170 MPa)	10	40-48
H1150	135 ksi (930 MPa)	105 ksi (725 MPa)	12	30-38
H1150M	110 ksi (760 MPa)	85 ksi (585 MPa)	15	28-36

 

5. Physical Properties

• Density: 0.282 lb/in³ (7.80 g/cm³)

• Melting Point: 2560-2625°F (1400-1440°C)

• Magnetic Response: Yes (martensitic structure)

• Thermal Conductivity: 14.4 BTU·ft/hr·ft²·°F (24.9 W/m·K)

• Corrosion Resistance: Comparable to 304 stainless; resistant to acids, freshwater, steam, and petroleum.

 

6. Tubing Specifications

Parameter	Details
Type	Seamless (SMLS), Cold-Drawn or Hot-Finished
OD Range	0.125" - 8" (3.18 mm - 203 mm)
Wall Thickness	0.020" - 1.5" (0.51 mm - 38.1 mm)
Length	Standard: 12-24 ft (3.6-7.3 m); Custom cuts available
Tolerances	ASTM A511, ASTM A564, or custom precision (e.g., ±0.001" on OD)
Surface Finish	Annealed/pickled, polished (#4, #8, mirror), sandblasted, or as-requested

 

7. Packaging

• Standard: Bundled with plastic/corrugated wrapping, wood-crated or palletized.

• Protection: PVC end caps, VCI (vapor corrosion inhibitor) paper for long-term storage.

• Labeling: Heat number, size, temper, quantity, and compliance marks (RoHS/REACH).

 

8. Value-Added Services

• Cutting: Precision saw, abrasive waterjet, or laser cutting.

• Heat Treatment: Custom aging (H900 to H1150M) for target strength/toughness.

• Machining: CNC turning, milling, threading, grooving.

• Surface Treatment: Passivation, electropolishing, bead blasting.

• Testing: Eddy current (ECT), hydrostatic, ultrasonic (UT), PMI (positive material identification).

• Welding: TIG/GTAW with ER630 filler wire.

 

9. Applications

630 seamless tubing is critical in high-performance sectors:

• Aerospace: Landing gear, actuator cylinders, hydraulic lines.

• Oil & Gas: Downhole tools, valve stems, chemical injection tubing.

• Medical: Surgical instruments, implantable device components (biocompatible grades available).

• Power Generation: Turbine blades, heat exchanger tubes.

• Industrial: Hydraulic/pneumatic cylinders, bearings, nuclear waste containers.

• Marine: Propeller shafts, subsea fittings.

 

10. Compliance & Certification

• Mill Test Reports (MTRs) per EN 10204 3.1/3.2.

• Compliance: NACE MR0175, ASTM A262, AMS 5643.

• Certifications: ISO 9001, AS9100, PED 2014/68/EU (upon request).