Production Description:
1. Steel Grade: 1.4542 AISI 17-4PH S17400
2. Product name: 1.4542 AISI 17-4PH S17400 Stainless Steel Square Tube
3. Length: 20m maximum
4. Outside diameter: 3mm - 219mm
5. Wall thickness: 0.5 - 35mm
Steel 1.4542 (Mat.No. 1.4542, DIN X5CrNiCuNb16-4, AISI 17-4PH)
Designation by Standards
| Brand Name |
Ravne No. |
Mat. No. |
DIN |
EN |
AISI |
| 1.4542 |
346 |
1.4542 |
X5CrNiCuNb16-4 |
- |
17-4PH |
Chemical Composition (in weight %)
| C |
Si |
Mn |
Cr |
Mo |
Ni |
V |
W |
Others |
| max. 0.07 |
max. 0.70 |
max. 1.50 |
16.00 |
max. 0.60 |
4.00 |
- |
- |
Cu: 3.50 |
Description
1.4542 is a martensitic precipitation/age-hardening stainless steel offering high strength and hardness along with excellent corrosion resistance. It has good fabricating characteristics and can be age hardened by a single-step, low temperature treatment. It has high strength combined with good corrosion resistance in fresh and salt water, industrial and marine atmosphere, and in oxidizing chemicals. 1.4542 shows excellent resistance to oxidation up to approximately 539C.
Applications
It has been used for a variety of applications including oil field valve parts, chemical process equipment, aircraft fittings, fasteners, pump shafts, nuclear reactor components, gears, paper mill equipment, missile fittings, and jet engine parts.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103x N/mm2]: 196
Density [g/cm3]: 7.79
Thermal conductivity [W/m.K]: 15.3, 23.0 at 500oC
Electric resistivity [Ohm mm2/m]: 0.80
Specific heat capacity[J/g.K]: 0.46, 0.65 at 500oC
Transformation points: Ac(began): 590oC, Ac(finish): 770oC, Ms: 130oC, Mf: 30oC
Coefficient of Linear Thermal Expansion 10-6oC-1
| 20-100oC |
20-200oC |
20-300oC |
20-400oC |
20-500oC |
| 11.7 |
11.7 |
12.1 |
12.2 |
11.9 |
Continuous Cooling Transformation (CCT) Diagram
Click the image to enlarge the diagram.
Solution Treatment
Heat to 1025-1055oC, then air or oil cooling. This will produce a maximum Brinell hardness of 363.
Precipitation Hardening
Temperature 480-620oC, then air cooling. Hardness after precipitation hardening is 42-32 HRC.
Precipitation Hardening Temperature (oC) vs. Hardness (HRC)
| 100oC |
200oC |
300oC |
400oC |
450oC |
500oC |
600oC |
650oC |
| 34 |
34 |
35.5 |
42 |
45.5 |
42.5 |
35 |
32.5 |
Precipitation Hardening Diagram
Click the image to enlarge the diagram.
Mechanical Properties of Precipitation Hardened Steel
| Temperature |
0.2 % proof stress (N/mm2) |
Tensile strength (N/mm2) |
Elongation, min. (%) |
Reduction, min. (%) |
Notch impact energy (ISO-V), min. (J) |
| 480oC |
1170 |
1310 |
10 |
40 |
- |
| 495oC |
1070 |
1170 |
10 |
44 |
7 |
| 550oC |
1000 |
1070 |
12 |
45 |
20 |
| 595oC |
795 |
965 |
14 |
45 |
34 |
| 620oC |
725 |
930 |
16 |
50 |
41 |
| 760oC |
515 |
795 |
18 |
55 |
75 |
Forging
Hot forming temperature: 1100-900oC.
Cold Working
Despite its high initial yield strength, 17-4 can be cold worked successfully by most common methods.
Machinability
Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening.
Corrosion Resistance
1.4542 has withstood corrosive attack better than any of the 400 series hardenable stainless steels, and, in most corrodents, its corrosion resistance closely approaches that of stainless types 302 and 304.
Weldability
1.4542 can be satisfactorily welded by the shielded fusion and resistance welding processes. Oxyacetylene welding is not recommended, since carbon pickup in the weld may occur. When a filler metal is required, AWS E/ER630 welding consumables should be considered to provide welds with properties matching those of the base metal. When designing the weld joint, care should be exercised to avoid stress concentrators, such as sharp corners, threads, and partial-penetration welds. When high weld strength is not needed, a standard austenitic stainless filler, such as E/ER308L, should be considered.
Company Information:
Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, ilitary, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
steel coil
l steel plate
l steel sheet
l steel bar/rod
steel round bar
steel flat bar
steel square bar
l steel pipe/tube ( welded or seamless )
steel round pipes
steel square pipes
steel welded tubes
steel seamless tubes
l steel strip
l steel beam
l steel angle
l steel channel
l steel flange
l Steel wire
Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
Special steel includes as below:
Boiler and pressure vessel steel
Pipeline steel
Bridge steel
Nuclear power steel
Structural steel
Die steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel
FAQ
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A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.
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A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
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