Different metals and alloys are used for making round bars. One of the most common alloys is that of chromium, nickel, and copper. It is also known as 17-4PH Round Bar. These bars are made up of martensitic steel and do not have chromium in them hence 17-4PH Polished Baris prone to rust. When these 1.4542 Round Bars are delivered from the mill they have slight rust and oxide that can be removed by blasting it with steel. It is usual for these UNS S17400 Bar to be pickled even though they cannot be pickled safely using nitric hydrofluoric acid mixtures. If 17-4PH Hot Rolled Round Bar needs to be pickled then they need to be put through a nitric only bath that leaves a thin layer of iron oxide on the surface.
17-4PH Cold Drawn Round Bar also faces the same issue with water stains. They appear on higher nickel alloy material. It is common on products derived from the coil. In case the SA564 Grade 630 Solid Barb is rolled with water present on it then stains can appear on it in different colors. ASTM A564 Type 630 Rod provides high strength and corrosion resistance at room temperature. They also display these properties upto a temperature of 600 degrees F. The mechanical properties of theseA564 GR 630 17 4PH Forged Bar can be optimized using heat treatment and by age hardening. A564 630 Square Bar is used in applications that require high strength and moderate resistance to corrosion.
ASTM A564 TP630 Rectangular Bar can be easily welded and fabricated using conventional methods. They are supplied in solution annealed condition. A564 GR 630 Hex Baris not recommended to be used in temperatures above 572 degrees F for cryogenic service. Incase ASTM A564 Grade 630 Bright bar has stains that are tough to remove a bristle or stainless brush may be used to get the desired stain removed. ASTM A564 GR 630 Hollow Bar produced by us is supplied to various customers in different industries. The durability of these A564 Type 630 Flat Bar is the reason they have always been in demand.
17-4PH Material Specification: ASTM A564 TYPE 630/ ASME SA564 TYPE 630
Grade: ASTM A276 SS 304 Bar,ASTM A276 304L SS Bar, ASTM A276 SS 309 Bar, ASTM A276 SS 310 Bar, ASTM A276 SS 310S Bar, ASTM A276 SS 314 Bar, ASTM A276 SS 316 Bar, ASME SA276 SS 316L Bar, ASTM A276 SS 316Ti Bar, ASTM A276 SS 317L Bar
Form: Round, Square, Hex (A/F), Bush, Rectangle, Flat, Billet, Ingot, Forging, PSQ Bar, Wire Rod, Wire (Coil Form), Wire-mesh etc.
Size Range: 15NB to 150NB In manufacturing process: Cold drawn/ Extruded
Length: 100 mm To 3000 mm Long & Above
Diameter (Size) : Metric M6 to M48, Inches - 1/4’’ to 2’’
Tolerance : H8, H9, H10, H11, H12, H13, K9, K10, K11, K12 or as per clients’ requirements
Finish : Cold Drawn, Shot Blast & Drawn, 240 Grit Belt Polished, Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish, High Polished
Condition : Cold Drawnd Polished Cold Drawn Centreless Ground & Polished, Threading
Surface : Hot Rolled Pickled or Sand Blasting Finished, Cold Drawn, Bright, Polished, Hairline
Specifications |
17-4PH Round bar |
Diameter: 3mm~800mm |
|---|---|---|
17-4PH Angle bar |
Size: 3mm*20mm*20mm~12mm*100mm*100mm |
|
17-4PH Square bar |
Size: 4mm*4mm~100mm*100mm |
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17-4PH Flat bar |
Thickness: 2mm~100mm |
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Width: 10mm~500mm |
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17-4PH Hexagonal |
Size: 2mm~100mm |
ASTM A564 TYPE 630 UNS S17400 Round Bar
17-4PH Round Bar, 17-4ph Stainless Steel Round Bar
ASTM A564 TYPE 630 UNS S17400 Flat Bar
17-4PH Flat Bar, 17-4ph Stainless Steel Flat Bar
ASTM A564 TYPE 630 UNS S17400 Square Bar
17-4PH Square Bar, 17-4ph Stainless Steel Square Bar
ASTM A564 TYPE 630 UNS S17400 Round Corner Square Bar
17-4PH Round Corner Square Bar, 17-4ph Stainless Steel Round Corner Square Bar
ASTM A564 TYPE 630 UNS S17400 PSQ Bar (PUMP SHAFT QUALITY BAR)
17-4PH PSQ Bar (PUMP SHAFT QUALITY BAR), 17-4ph Stainless Steel PSQ Bar
ASTM A564 TYPE 630 UNS S17400 Hexagonal Bar / Hexagon Bar
17-4PH Hexagon Bar, 17-4ph Stainless Steel Hexagon Bar
ASTM A564 TYPE 630 UNS S17400 Flat Block Bar
17-4PH Flat Block Bar, 17-4ph Stainless Steel Flat Block Bar
ASTM A564 TYPE 630 UNS S17400 Rectangular Bar
17-4PH Rectangular Bar, 17-4ph Stainless Steel Rectangular Bar
ASTM A564 TYPE 630 UNS S17400 Hollow Ring Bar
17-4PH Hollow Ring Bar, 17-4ph Stainless Steel Hollow Ring Bar
ASTM A564 TYPE 630 UNS S17400 Bright Round Bar
17-4PH Bright Round Bar, 17-4ph Stainless Steel Bright Round Bar
ASTM A564 TYPE 630 UNS S17400 Forged Round Bar
17-4PH Forged Round Bar, 17-4ph Stainless Steel Forged Round Bar
ASTM A564 TYPE 630 UNS S17400 Cold Drawn Bar
17-4PH Cold Drawn Bar, 17-4ph Stainless Steel Cold Drawn Bar
ASTM A564 TYPE 630 UNS S17400 Hollow Bar
17-4PH Hollow Bar, 17-4ph Stainless Steel Hollow Bar
ASTM A564 TYPE 630 UNS S17400 Circular Bar
17-4PH Circular Bar, 17-4ph Stainless Steel Circular Bar
ASTM A564 TYPE 630 UNS S17400 Threaded Bar
17-4PH Threaded Bar, 17-4ph Stainless Steel Threaded Bar
ASTM A564 TYPE 630 UNS S17400 Angle Bar
17-4PH Angle Bar, 17-4ph Stainless Steel Angle Bar
ASTM A564 TYPE 630 UNS S17400 Forged Bar
17-4PH Forged Bar, 17-4ph Stainless Steel Forged Bar
ASTM A564 TYPE 630 UNS S17400 Triangle Bar
17-4PH Triangle Bar, 17-4ph Stainless Steel Triangle Bar
ASTM A564 TYPE 630 UNS S17400 Welding Rod
17-4PH Welding Rod, 17-4ph Stainless Steel Welding Rod
ASTM A564 TYPE 630 UNS S17400 Threaded Rod
17-4PH Threaded Rod, 17-4ph Stainless Steel Threaded Rod
ASTM A564 TYPE 630 UNS S17400 Filler Rod
17-4PH Filler Rod, 17-4ph Stainless Steel Filler Rod
17-4PH Forged Round Bars Capabilities: The maximum length for forged round bars and hex bars is 420 inches, in the ASTM A564 TYPE 630 17-4PH Bars with a maximum weight of 20,000 pounds, 220 inches.
17-4PH Flat Bars Capabilities: The maximum length for ASTM A564 TYPE 630 17-4ph Stainless Steel flat bars is 220 inches in the ASTM A564 TYPE 630 17-4PH Bars with a maximum weight of 15,000 pounds.
17-4PH Square Bars Capabilities: The maximum length for ASTM A564 TYPE 630 17-4ph Stainless Steel square bars is 220 inches in the ASTM A564 TYPE 630 17-4PH Bars with a maximum weight of 15,000 pounds
Corrosion Resistance
17-4PH stainless steel has excellent corrosion resistance. Corrosion tests and service experience have shown that in all aged conditions it is superior to standard hardenable stainless grades such as 420, 431 and 410. Its corrosion resistance is comparable to grade 304 Stainless.
Welding
Arc and resistance welding processes used on standard grades of stainless steel are applicable to 17-4PH stainless steel. The low hardness enables sections, up to 100mm, to be welded without requiring pre heating.
Fabrication
17-4PH Condition is suitable for limited cold forming, H1100, H1150 and overaged conditions are more suitable when severe cold forming is required.
Machining
17-4PH Condition has machining characteristics similar to stainless grades 302, 304 and 410. The high hardness and strength in Condition H900 is the most difficult to machine and the material should be machined at 60% of the rate which is used for Condition A.
Nitriding
To increase the resistance to surface wear, with a slight decrease in corrosion resistance, 17-4PH stainless steel can be nitrided. An approximate hardness of 64/67HRc can be achieved, with a surface hardness depth of up to 0.15mm when nitrided at 540°C, while still maintaining a high core strength
| Designation | Processing |
|---|---|
| Condition A | Heated at 1900°F±25°F for 1/2 hour, air (Solution Treated) cooled or oil quenched to below 90°F. Normally performed at mill. For most applications, 17-4 PH stainless should not be used in Condition A. This is true even though the desired tensile strength may be provided by that condition. The structure is untempered martensite that has low fracture toughness and ductility, while having poor resistance to stress-corrosion cracking. Superior service performance is assured by using 17-4PH stainless in the heat-treated condition. For optimum machining results; if no aging condition is specified, H1150 should be used. |
| H900 | Condition A material heated at 900°F±15°F for 1 hour and air cooled. Maximum hardness but low toughness. Sensitive to stress corrosion cracking. Heating 4 hours improves toughness with about 4 ksi reduction in tensile and yield. |
| H925, H1025, H1075, H1100, H1150 |
Condition A material heated 4 hours at specific temperature, and air cooled. |
| HH1150 | Condition A material heated 4 hours at 1150F, air cooled, heated again for an additional 4 hours at 1150F and air cooled. |
| H1150-M | Condition A material heated at 1400°F±25°F for 2 hours, air cooled, then heated at 1150°F±15°F for 4 hours and air cooled. |
| Ni | Cr | Mo | Mn | Cu | Si | C | Cb+Ta | S | P | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MIN | 3.0 | 15.0 | - | - | 3.0 | - | - | 5 x C | - | - | - |
| MAX | 5.0 | 17.5 | 0.50 | 1.0 | 5.0 | 1.0 | 0.07 | 0.45 | 0.03* | 0.04* | Balance |
*0.025 max
| Chemical Composition | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min. % | Max % | |||||||||||
| Carbon | 0.07 | |||||||||||
| Silicon | 1.00 | |||||||||||
| Manganese | 1.00 | |||||||||||
| Nickel | 3.00 | 5.00 | ||||||||||
| Chromium | 15.00 | 17.50 | ||||||||||
| Copper | 3.00 | 5.00 | ||||||||||
| Niobium | 0.15 | 0.45 | ||||||||||
| Phosphorous | 0.04 | |||||||||||
| Sulphur | 0.03 | |||||||||||
| Mechanical Test Requirements in Solution Annealed and Age Hardened Conditions - At Room Temperature | ||||||||||||
| *Condition | A | H900 (H480) | H925 (H495) | H1025 (H550) | H1075 (H580) | H1100 (H595) | H1150 (H620) | H1150M (H620M) | H1150D (H620D) | |||
| Ruling Section | Up to 200 mm | Up to 200 mm | Up to 200 mm | |||||||||
| UTS Mpa (Min) | 1310 | 1170 | 1070 | 1000 | 965 | 930 | 795 | 860 | ||||
| Yield Mpa (Min) | 1170 | 1070 | 1000 | 860 | 795 | 725 | 502 | 725 | ||||
| Elongation % in 50mm (Min) | 10 | 10 | 12 | 13 | 14 | 16 | 18 | 16 | ||||
| Hardness | Rc | 38 Max | 40 | 38 | 35 | 32 | 31 | 28 | 24 | 24 | 33 Max | |
| BHN | 363 Max | 388 | 375 | 331 | 311 | 302 | 277 | 255 | 255 | 331 Max | ||
| Impact Charpy - V | ft/lbs (Min) | 5 | 15 | 20 | 25 | 30 | 55 | 30 | ||||
| Joules (Min) | 6.8 | 20 | 27 | 34 | 41 | 75 | 41 | |||||
| Typical Mechanical Properties - At Room Temperature | ||||||||||||
| *Condition | A | H900 (H480) | H925 (H495) | H1025 (H550) | H1075 (H580) | H1100 (H595) | H1150 (H620) | H1150M (H620M) | H1150 (H620D) | |||
| UTS Mpa | 1100 | 1375 | 1310 | 1170 | 1140 | 1035 | 1000 | 860 | 950 | |||
| Yield Mpa | 900 | 1275 | 1205 | 1140 | 1035 | 930 | 860 | 600 | 800 | |||
| Elongation % in 50mm | 15 | 14 | 14 | 15 | 16 | 17 | 19 | 22 | 20 | |||
| Hardness | Rc | 36 | 44 | 42 | 38 | 36 | 35 | 33 | 27 | 31 | ||
| BHN | 340 | 420 | 390 | 350 | 340 | 330 | 310 | 275 | 295 | |||
| Impact Charpy - V | ft/lbs | 30 | 15 | 25 | 35 | 40 | 45 | 50 | 100 | 90 | ||
| Joules | 40 | 20 | 34 | 47 | 54 | 61 | 68 | 135 | 120 | |||
| *Refer Age Hardening temperature table | ||||||||||||
| Low Temperature Properties | ||||||||||||
| Retains relatively good ductility at sub zero temperatures, with impact properties greatly improved at higher ageing temperatures:- | ||||||||||||
| Typical sub zero charpy V-notch impact properties | ||||||||||||
| Test Temperature | oF | 10 | -40 | -112 | -148 | -320 | ||||||
| oC | -12 | -40 | -80 | -100 | -196 | |||||||
| Impact Strength | H925 ft-lb |
16 | 9 | 5 | 5 | 3 | ||||||
| (H495) J |
22 | 12 | 7 | 7 | 4 | |||||||
| H1025 ft - lb |
58 | 40 | 15 | 12 | 4 | |||||||
| (H550) J |
79 | 54 | 20 | 16 | 6 | |||||||
| H1150 ft - lb |
93 | 76 | 48 | 37 | 6 | |||||||
| (H620) J |
126 | 103 | 65 | 50 | 8 | |||||||
| Age Hardening | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material in the solution annealed condition may be age hardened as follows:-*Denotes Double Overaged | ||||||||||||
| Condition | H900 (H480) | H925 (H495) | H1025 (H550) | H1075 (H580) | H1100 (H595) | H1150 (H620) | H1150M (H620M)* | Plus | H1150D (H620D)* | Plus | ||
| Heat to | ±15oF | 900oF | 925 oF | 1025oF | 1075oF | 1100oF | 1150oF | 1400oF | 1150oF | 1150oF | 1150oF | |
| ±9oC | 480oC | 495oC | 550oC | 580oC | 595oC | 620oC | 760oC | 620oC | 620oC | 620oC | ||
| Hold for Hours | 1 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 4 | 4 | ||
| Cool to Below 90oF (32oC) |
Air | Air | Air | Air | Air | Air | Air | Air | Air | Air | ||
