JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
| Model NO. | 17-4PH/630 |
| Shape | Round |
| Technique | Hot Rolled |
| Surface Treatment | Bright |
| Specification | OD 6-300mm |
| Diameter | 8 - 450mm |
| Length | 6m /pcs or cutting as request |
| Tensile Strength | 1105-1310 MPa |
| Yield Strength | 724-1170 MPa |
| Elongation | 10-16% |
| Hardness | 28-44 HRC |
| Thermal Conductivity | 18.4-22.7 W/m.K |
| Specific Heat | 460 J/kg.K |
| Elec Resistivity | 800 nΩ.m |
| Density | 7750 kg/m³ |
| Certification | ISO, AISI, ASTM, EN, DIN, JIS |
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Product Specification
| Model NO. | 17-4PH/630 | Shape | Round |
| Technique | Hot Rolled | Surface Treatment | Bright |
| Specification | OD 6-300mm | Diameter | 8 - 450mm |
| Length | 6m /pcs or cutting as request | Tensile Strength | 1105-1310 MPa |
| Yield Strength | 724-1170 MPa | Elongation | 10-16% |
| Hardness | 28-44 HRC | Thermal Conductivity | 18.4-22.7 W/m.K |
| Specific Heat | 460 J/kg.K | Elec Resistivity | 800 nΩ.m |
| Density | 7750 kg/m³ | Certification | ISO, AISI, ASTM, EN, DIN, JIS |
| High Light | Hot Rolled Stainless Steel Rod ，Bright Surface Stainless Steel Bar ，OD 6-300mm 17-4PH Stainless Steel | ||
| Products | 17-4PH Stainless Steel Round Bar |
|---|---|
| Standard | ASTM GB DIN EN |
| Diameter | 8 - 450mm |
| Length | 6m /pcs or cutting as request |
| Finishing | black bar / Bright Bar |
| Main Grade | 201 301 303Cu 304 304L 309S 310S 316L 316Ti 317L 318 321 347 410 420 430 431 440a/b/c 904L 2205 2507 Hastelloy C276 C4 C22 Inconel 600 625 Incoloy 800 825 825H.etc |
| Service | Cutting, surface polishing, heat treatment |
| Brand | Walsin BAOSTEEL TISCO QINGSHAN |
17-4PH Stainless Steel (also known as Type 630) is a chromium-copper precipitation hardening stainless steel used for applications requiring high strength and moderate corrosion resistance. High strength is maintained to approximately 600°F (316°C).
Alloy 17-4 PH is a precipitation hardening martensitic stainless steel with Cu and Nb/Cb additions. The grade combines high strength, hardness (up to 572°F / 300°C), and corrosion resistance. Mechanical properties can be optimized with heat treatment, achieving very high yield strength up to 1100-1300 MPa (160-190 ksi).
| Applications | Standards |
|---|---|
|
|
| Grade | C | Mn | Si | P | S | Cr | Ni | Cu | Nb+Ta |
|---|---|---|---|---|---|---|---|---|---|
| 630 | min. max - 0.07 | - 1 | - 1 | - 0.04 | - 0.030 | 15 17.5 | 3 5 | 3 5 | 0.15 0.45 |
| Condition | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell C (HR C) | Hardness Brinell (HB) |
|---|---|---|---|---|---|
| Solution Treated | 1105 typ | 1000 typ | 15 typ | 38 max | 363 max |
| Condition 900 | 1310 min | 1170 min | 10 min | 40 min | 388 min |
| Condition 1150 | 930 min | 724 min | 16 min | 28 min | 277 min |
| Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Elec Resistivity (nΩ.m) |
|---|---|---|---|
| 0-100°C: 10.8 0-315°C: 11.6 0-538°C: - | At 100°C: 18.4 At 500°C: 22.7 | 460 | 800 |
| Grade | UNS No | Euronorm | Japanese JIS |
|---|---|---|---|
| 630 | S17400 | 1.4542 X5CrNiCuNb16-4 | SUS 630 |
| Grade | Reasons for choosing 17/4PH (630) |
|---|---|
| 431 | 431 Has higher toughness than 17/4PH. Better availability in some sizes. |
| 416 | Free-machining martensitic stainless steel - better for repetition machining. Lower cost. |
| 316 | Higher corrosion resistance of 316 to resist more severe environments, but with much lower strength than 17/4PH. |
| 2205 | Much better corrosion resistance than 17/4PH, with a lower strength (but not as low as 316). |
Grade 630 stainless steels have good corrosion resistance in many environments. They exhibit improved resistance against stress corrosion cracking when aged at 550°C or more. However, grade 630 steels are less resistant in solution treated Condition A and should not be used in this condition despite considerable hardness.
Grade 630 stainless steels have good resistance to oxidation. However, long-time exposure to temperatures of 370 to 480°C should be avoided to prevent loss of toughness at ambient temperature. These grades should not be used above age-hardening temperature to avoid reduction of hardness and mechanical properties.
Solution treatment (Condition A) - Grade 630 stainless steels are heated at 1040°C for 0.5 h, then air-cooled to 30°C. Small sections can be oil quenched.
Hardening - Grade 630 stainless steels are age-hardened at low temperatures to achieve required mechanical properties. During the process, superficial discoloration occurs followed by shrinkage.
| Condition | Hardening Temp (°C) | Time (h) | Typical Hardness Rockwell C | Tensile Strength (MPa) |
|---|---|---|---|---|
| A | Ann | - | 36 | 1100 |
| H900 | 482 | 1 | 44 | - |
| H925 | 496 | 4 | 42 | 1170-1320 |
| H1025 | 552 | 4 | 38 | 1070-1220 |
| H1075 | 580 | 4 | 36 | 1000-1150 |
| H1100 | 593 | 4 | 35 | 970-1120 |
| H1150 | 621 | 4 | 33 | 930-1080 |
Welding: Grade 630 stainless steels can be welded using all conventional methods without pre-heating. Care should be taken in designing and welding of high strength steels to prevent weldment stresses.
Machining: Grade 630 stainless steels can be machined in their solution-treated condition. They have machining rates similar to grade 304 steels.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...
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