China Manufacturer Special Steel High Quality Stainless Steel 17-4PH SUS630 for Petrochemical & Refinery
1. Technology:Hot rolled,Cold Draw,Forging
2. Surface:Black,Bright(Peeling,Turning,Grinding,Polished)
3. Trade Terms:FOB, CIF, C&F, EXW, etc.
- Inquiry
Model: 17-4PH/S17400/630/1.4542/SUS630
Code: 17-4PH
17-4 Precipitation-Hardening Stainless Steel
Material Performance
17-4PH stainless steel is a magnetic precipitation hardening--martensitic stainless steel with special metallic elements copper and niobium.17-4PH stainless steel is the most widely used material of all the precipitation-hardening stainless steels.
After heat treatment, the mechanical properties will be more perfect, and the tensile strength can reach the compressive strength of 1100-1300 Mpa (160-190 ksi). This grade cannot be used above 300°C (572°F) or very low temperature (impact AKV -60°C≥45J).It has good corrosion resistance to the atmosphere diluted acid and salt, just same as 304 and 430.
Features:High hardness, good toughness, good wear resistance, good corrosion resistance, good attenuation performance, strong anti-fatigue and anti-dropping performance.
Itsvaluable combination of properties gives designers opportunities to add reliability to their products while simplifying fabrication and often reducing costs.
Material Standards
GB/T1220-1992 | 0Cr17Ni4Cu4Nb |
AISI | 630 |
ASTM-A564 | |
UNS | S17400 |
ASTM | 17-4PH |
JIS G4303-2005 | SUS630 |
DIN | X5CrNiCU17-04 |
RCCM M5110、M5120 | X6CrNiCu17-04 |
EN-10088-3 2005 | 1.4542 |
Forms | Standards |
Bar,Profiles | ASTM-A564,ASTM-A484 |
Forging | AMS 5643,ASTM-A705,ASTM-A484 |
Plate,Strip | ASTM-A693 |
Composition Comparison
Standard | Grade | Si | Mn | P | S | Ni | Cr | Cu | Nb | Mo | |
GB/1220-1992 | 0Cr17Ni4 Cu4Nb | 0.07 | 1.0 | 1.0 | 0.035 | 0.03 | 3.0-5.0 | 15.5-17.50 | 3.0-5.0 | 0.15-0.45 | / |
GB/T1220-2007 | 05Cr17Ni4 Cu4Nb | 0.07 | 1.0 | 1.0 | 0.040 | 0.03 | 3.0-5.0 | 15.0-17.50 | 3.0-5.0 | 0.15-0.45 | / |
ASTM A564 | 630/17-4PH | 0.07 | 1.0 | 1.0 | 0.040 | 0.03 | 3.0-5.0 | 15.0-17.50 | 3.0-5.0 | 0.15-0.45 | |
EN1088-3 | 1.4542 | 0.07 | 0.7 | 1.5 | 0.040 | 0.03 | 3.0-5.0 | 15.0-17.50 | 3.0-5.0 | 0.15-0.45 | 0.60 |
RCCM 5110/5120 | X6CrNiCu 17-04 | 0.07 | 1.0 | 1.0 | 0.025 | 0.02 | 3.0-5.0 | 15.5-17.50 | 3.0-5.0 | 0.15-0.45 | / |
JIS G4303-2005 | SUS630 | 0.07 | 1.0 | 1.0 | 0.040 | 0.03 | 3.0-5.0 | 15.0-17.50 | 3.0-5.0 | 0.15-0.45 | / |
AMS | 5643 | 0.07 | 1.0 | 1.0 | 0.040 | 0.03 | 3.0-5.0 | 15.0-17.50 | 3.0-5.0 | 5×C-0.45 | 0.5 |
REMARK:The content of P can be customized.(p≤0.025,p≤0.03)
Heat treatment and Mechanical Properties
Type 17–4 PH steel is hardened by heating solution-treated material, condition A, to between 900/ºF (480ºC) and 1150ºF (620ºC) for one to four hours, depending upon the temperature, then air cooling.
As supplied 17-4PH, is usually in the solution treated condition, (Condition A). It can be heat treated at different temperatures to off a wide range of properties.
Type of Cooling
1.Solid Solution:Water Cooling/Air Cooling
2.Aging Treatment:Air Cooling
Grade | Condition | Heat Treatment | Tensile Test | Hardness Test | Impulse Test | |||||
Yield Strength | Tensile Strength | Elongation | Fracture Surface Shrinkage | Brinell Hardness | RockwellHardness | Test Temperature | ||||
σ0.2/MPa | σb/MPa | δ5(%) | ψ(%) | HBS | HRC | AKV | ||||
17-4PH A564) | A | Solid Solution | 1020~1060℃ Rapid Cool | — | — | — | — | ≤363 | ≤38 | / |
H900 | 480℃ Aging | After Solid Solution,470~490℃ Air Cool | ≥1180 | ≥1310 | ≥10 | ≥40 | ≥375 | ≥40 | / | |
H925 | 495℃ Aging | After Solid Solution,470~490℃ Air Cool | ≥1070 | ≥1170 | ≥10 | ≥38 | ≥375 | ≥40 | ≥6.8 | |
H1025 | 550℃ Aging | After Solid Solution,540~560℃ Air Cool | ≥1000 | ≥1070 | ≥12 | ≥45 | ≥331 | ≥35 | ≥20 | |
H1075 | 580℃ Aging | After Solid Solution,570~590℃ Air Cool | ≥865 | ≥1000 | ≥13 | ≥45 | ≥302 | ≥31 | ≥27 | |
H1100 | 595℃ Aging | After Solid Solution,570~590℃ Air Cool | ≥795 | ≥965 | ≥14 | ≥45 | ≥302 | ≥31 | ≥34 | |
H1150 | 620℃ Aging | After Solid Solution,610~630℃ Air Cool | ≥725 | ≥930 | ≥16 | ≥50 | ≥277 | ≥28 | ≥41 | |
H1150M | 620℃ Aging | After Solid Solution,610~630℃ Air Cool | ≥520 | ≥795 | ≥18 | ≥55 | ≥255 | ≥24 | ≥75 | |
H1150D | 620℃ Aging | After Solid Solution,610~630℃ Air Cool | ≥725 | ≥860 | ≥16 | ≥50 | ≥255 | ≥24 | ≥41 |
Delivery Condition
1.Solid Solution/Annealing
Heat at 1900ºF (1040ºC) for 30 minutes and cool to below 90ºF (32ºC) to allow complete
transformation to martensite. Sections less than 3’’ may be quenched in a suitable liquid while those sections over 3’’ should be rapidly air cooled. Parts should not be used in the solution – treated condition due to possible problems with stress corrosion cracking.
2.Solid Solution+Aging Treatment(Customized according to customer requirements)
For condition H900 heat solution-treated material at 900ºF (480ºC) for 1 hour and air cool.
For conditions H925, H1025, H1075, H1100, H1150: heat solution-treated material at appropriate temperature ± 15ºF (± 8ºC) for 4 hours and air cool.
Processing Equipment
20 tons complete electric arc furnace,AOD refining,LF refining,VD vacuum smelting equipment, 1.5 tons and 5 tons ESR equipment,5 tons and 10 tons forging hammers,7.5 meters and 9 meters chamber annealing furnaces,straightening machines , peeling machine, grinding machine, polishing machine, lathe and other production&processing equipment ,etc.
Testing Equipment
Direct reading spectrometer, hardness tensile and impact testing machine, ultrasonic nondestructive flaw detector,metallurgical microscope,etc.
All the following can be tested:inclusions, retained austenite, grain size, low temperature impact (AKV -30°C ≥ 45J, AKV -45°C ≥ 45J, AKV -60°C ≥ 45J, etc.), flaw detection,ultrasonic testing, penetrant testing and other high grades required test.
Advantage
1. Different smelting methods:
EAF+AOD+LF, EAF+AOD+LF+ESR, EAF+AOD+LF+IESR, EAF+AOD+VAR, VIM+VAR.
2. Better cooling: cooling in water to keep the material organization even and stability. Most of suppliers cool in air.
3. All polish bar will be ultrosonic tested or dye-penetrant tested for free before shipment.
4. Impact test can be down as per different industrial requirement: AKV-60℃≥45J、-40℃≥45J、-30℃≥45J、-20℃≥60J、0℃≥60J)
5. Heat Treatment: Solid solution or Solid solution + Aging.
6. Customization: American standard, Japanese standard, European standard and other standards can be customized.
7. Stock: Stock for round bar Ф6-Ф400 is complete.
8. Ferrite content can be controlled as customized(≤1%, ≤3%, ≤5%).
9. Grain size can be ≥6;Inclusions content A,B,C,D,DS can be ≤10.
Diameter Tolerance of Grinding Bar
ISO Tolerance Standards | ||||||||
Diameter(mm) | Tolerance Grades | |||||||
Grade 6 | Grade 7 | Grade 8 | Grade 9 | Grade 10 | Grade 11 | Grade 12 | Grade 13 | |
H6 | H7 | H8 | H9 | H10 | H11 | H12 | H13 | |
Max 3.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Ф3.0-Ф6.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Ф6.0-Ф10.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Ф10.0-Ф18.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Ф18.0-Ф30.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Ф30.0-Ф50.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Application Area
1.Petroleum&petrochemical industry | Valve stem, Ball valve core, Offshore drilling platform, Drilling equipment, Pump shaft,etc. |
2. Sensors: | Scales, Robots, Airbags, etc. |
3. Medical equipment: | Surgical forceps; Orthodontic appliances,etc. |
4. Nuclear power: | Gas turbine blades, Steam Turbine Blades,Compressor blades, Nuclear waste barrels,etc. |
5.Mechanical equipment: | Shaft parts of hydraulic machinery, Shaft parts of air blowers, Hydraulic cylinders, Container shaft parts, etc |
6.Textile Machinery: | Spinneret,etc. |
7. Fasteners: | Bolts, Nuts,etc |
8.Sports equipment: | Golf head, Weightlifting pole,Cross Fit,Weight lifting lever,etc |
9.Others: | Molds, Modules, Precision castings, Precision parts, etc. |