630 - (17-4)PH ​Stainless steel round bar

---

A leading stockholder and distributor for quality Stainless Steel and Super Duplex steels.
Located in Perth, Western Australia. We ship worldwide from stock or indent order.

---

17-4 stainless is an age-hardening martensitic stainless combining high strength with the corrosion resistance of stainless steel. Hardening is achieved by a short-time, simple low-temperature treatment. Unlike conventional martensitic stainless steels, such as type 410, 17-4 is quite weldable. The strength, corrosion resistance and simplified fabrication can make 17-4 stainless a cost-effective replacement for high strength carbon steels as well as other stainless grades.

At the solution treating temperature, 1900°F, the metal is austenitic but undergoes transformation to a low-carbon martensitic structure during cooling to room temperature. This transformation is not complete until the temperature drops to 90°F. Subsequent heating to temperatures of 900-1150°F for one to four hours precipitation strengthens the alloy. This hardening treatment also tempers the martensitic structure, increasing ductility and toughness. 

Specifications available from stock or indent
AMS 5604, AMS 5643, AMS 5825
ASME SA 564, ASME SA 693, ASME SA 705, ASME Type 630
ASTM A 564, ASTM A 693, ASTM A 705, ASTM Type 630
ISO 15156-3
NACE MR0175
S17400
UNS S17400
W. Nr./EN 1.4548 

Common Trade Names
17-4 PH, 630 Stainless, 17-4

Features

• High tensile strength and hardness to 600°F
• Corrosion resistant
• Excellent oxidation resistance to about 1100°F
• Creep-rupture strength to 900°F

Applications

• Gate valves
• Chemical processing equipment
• Pump shafts, gears, plungers
• Valve stems, balls, bushings, seats
• Fasteners

Click here for data sheet or click here for stock list.

Stocking Distributor of 630 (17/4)PH Round Bar
Specialty Metals
​Stock Holder of Quality Material

---

Specialty Metals stocking range of quality stainless steel round bar includes the following materials.

Duplex Stainless Steel Round Bar 
2205 ASTM A182-F51 (UNS S31803): 25.4, 50.8
ASTM A276, A484

Super Duplex Stainless Steel Round Bar
2507 ASTM A182-F53 (UNS S32750): 25.4, 38.1, 50, 76.2, 101.6, 152.4, 203.2, 254.0
ASTM A276 - 13, ASTM A479 / 479M -13a, NACE MR 0175 ISO15156-1 2009
Zeron 100 ASTM A182-F55 (UNS S32760): 50.8, 63.5, 76.2, 101.6
ASTM A276-13a / A479 /A479M-4, ASME SecII Part A-SA 478 / SA-479M 2013
Norsok 630 Ed.5, Norsok MDS - D 57 Rev. 4 09/10, Norsok M-650 Ed. 4, NACE MR 0175 ISO 15156-3 2009, NACE MR 0103 2012
Ferralium ASTM A182-F61 (UNS S32550): 50.8, 101.6, 152.4
ASTM A479, MLA-MPS-SD-BAR Rev 5, Norsok M-650, Norsok MDS D57 Rev 4

Austenitic Stainless Steel Round Bar
Nitronic 50 (XM-19, UNS S20910) : 44.45, 50.8, 76.2, 79.735, 88.9, 101.6, 114.3
ASTM A276 XM-19 (A), ASTM A479 XM-19 (A), NACE MR0175 ISO15156-3
Nitronic 60 (A218, UNS S21800): 50.8, 76.2
ASTM A276 -10, ASTM A479/A479M-11

Martensitic Stainless Steel Round Bar
410SS (UNS S41000): 38.1, 50.8, 76.2, 101.6, 152.4, 203.2
AISI 410QT
ASTM A182, ASTM A276, ASTM A473, ASTM A479
JIS G4303 SUS410
NACE MR0175

420SS (UNS S42000): 38.1, 50.8, 76.2, 101.6, 152.4, 203.2
AISI 420QT
ASTM A276
JIS G4303 SUS420J2
NACE MR0175​

Precipitation Hardened Stainless Steel Round Bar
630SS (17-4/PH, UNS S63000): 25.4, 38.1, 50.8, 76.2, 101.6, 152.4, 203.2, 215, 304.8
ASTM A564/ A 564M-13, ASME Sec II Part A-SA 564 / SA 564M 2013
NACE MR 0175 ISO15156-1 2009, API 6A ed.20ISO10423 Ed. 10 And 11/13

We have full traceability and supply our Material Certs with every order.

See our current stock list for details.