SUH630 Metal Powder Injection Molded Parts

Product Description

SUH630's technicians are additionally qualified to effectively handle issues related to material specifications, NDT procedures and quality. , The metal sales staff is to provide customers with good service, from signing the contract order to the delivery date, they guarantee high-quality products, and customers are very willing to cooperate in any way.

Introduction to the chemical composition and performance of SUH630 stainless steel:

SUH630

Japanese SUH630 standard: JIS

Material number: SUH630 precipitation hardening stainless steel

SUH630 characteristics and applications: SUH630 stainless steel

Chemical composition of SUH630:

Carbon C: ≤0.08

Silicon Si: ≤1.00

Manganese Mn: ≤1.00

Phosphorus P: ≤0.045

Sulfur S: ≤0.030

Chromium Cr: 15.0-17.0

Molybdenum Mo:—

Nickel Ni: 3.0-5.0

Copper Cu: 3.0-5.0

Niobium Nb: 0.15-0.45

SUH630 properties

sUH630 alloy is precipitated, quenched, martensitic stainless steel, and this grade has high strength, hardness (up to 800 0 C/5000 C) and corrosion resistance. After heat treatment, the mechanical properties of the product are more perfect, and the compressive strength can reach as high as 1100-1300 mpa (160-190 ksi). This grade cannot be used above 300 0C (572 0F) or at very low temperatures. It has good corrosion resistance to the atmosphere and diluted acids or salts. Its corrosion resistance is the same as 304 and 430.

SUH630 application fields

Offshore platforms, helidecks, other platforms

food industry.

Pulp and Paper Industry

Aerospace (turbine blades)

Mechanical components

Nuclear waste bins.

SUH630 corrosion resistance

The corrosion resistance of SUH630 alloy is better than any other standard hardenable stainless steel plate. In most cases it resists corrosion no less than 304 c.

If there is a risk of stress corrosion cracking, higher curing temperatures must be above 550° C (1022° F), preferably 590° C (1094° F).

Chloride}) the optimum tempering temperature is 550°C- -1022°F.

The best tempering temperature in H2S medium is 590° C-1094° Fo

This alloy is susceptible to pitting or crevice corrosion in static seawater.

SUH630 metal powder injection molded parts have the same corrosion resistance as 304L grade in petrochemical, food processing and paper making industries.

Hardening 496°C (925°F) - 4 hours - air cooling

Hardening 593°c (1100°F) - 4 hours - air cooling

The above are two examples of heat treatment.

If you have other requirements, please contact us.

High temperature characteristics

The minimum value refers to EN10088 hot-rolled plate.

EN characteristics are guaranteed to be effective in the thickness range of 3/16”-3”.

Heat treatment: hardening 590°C (1094°F) - 4 hours - air cooling

The above is an example of heat treatment.

If you have special requirements please contact us.

Room temperature shock minimum

Minimum values refer to ASTM A693 Hot Rolled Plates

ASTM guaranteed values are valid for 3/16”-3” thickness range.

Room temperature characteristics of SUH630

Resistivity: 80u*cm

Specific heat capacity: 460 J.kg-1.K-1

Tension coefficient: 77 GPa

This alloy is magnetic.

SUH63o heat treatment

Heat treatment

Martensitic transformation

Index

Ms : 130°C (266°F)

Mf : 30°C (86°F)

Solution annealing

1050°C+/-25°c (1925°F+{-50°F) - 30 min up to

1050° C+/-25° c (1925°F+1-50°F) – 30 minutes-1 hour

Air cooled f oil quenched, below 25° c (76° F)

Cured/tempered

After heat treatment: 480 ° c (896 ° F) - 1 hour - after air cooling, you can get

At a higher curing temperature of 620°c (1148°F), higher potency can be obtained

Hardness/Temperature Austenitised at 1040°C (1904°F) for 30 minutes, tempered for 4 hours, quenched at 100°C/sec (212°F/sec).

SUH630 heat treatment

Processing

• Thermoforming

Thermoforming should be performed in the temperature range 950-1200°C (1742-2192°F). A complete heat treatment includes solution annealing, cooling (below 25°C) and aging (at a given temperature).

• Cold forming

Cold forming can only be carried out on the plate in the soft state, and the conditions are relatively strict. After cold working, the stress corrosion resistance can be enhanced by secondary aging at quenching and hardening temperatures.

The processing procedures are as follows: rolling, bending, hydrogen reforming, etc. (in soft state).

• Cutting

Thermal cutting (plasma, sawing, etc.): Cutting procedures for this grade are appropriate taking into account thermally deteriorated parts. After cutting, grinding is performed to remove the oxide layer. Mechanical cutting: shearing, stamping, cold sawing, etc.

• Welding

SUH63O alloy can be used for the following welding: SMAW, GTAW, PAW and GMAW. SA welding can only be carried out after preliminary tests (checking whether there are cracks and the toughness of the weld metal).

Due to the solidification of ferrite, the possibility of thermal cracking and thermal deterioration of the weld metal is reduced.

Generally speaking, no preheating is required, and the intermediate temperature should be controlled at 120°C (248°F). After a complete heat treatment (solution annealing + quench hardening), the toughness will be enhanced.

Due to its own martensitic structure characteristics, the low oxygen content in the weld metal makes it maintain good toughness and ductility. In order to avoid cold cracking, the intervention of hydrogen should be avoided as much as possible.

SUH630 alloy can be welded with the same filler metal (such as E 630 (AWS A5.4)? ER 63O (AWS A5.9).

If the mechanical properties of SUH630 do not need to be considered during welding, austenitic filler metals can also be used without heat treatment afterwards.

• SUH630 machining

We can machine SUH630 alloy in the solution-treated or quenched and hardened state, and the processing conditions vary with the hardness of the material. We usually use high-speed cutters or lubricated carbonized knives for processing. If the customer requires very tight tolerances, we should also take into account possible dimensional changes during heat treatment.

• Description of SUH630

The technical information provided here reflects our highest level and most comprehensive knowledge at the time of compiling this information, but with the deepening of our research on anti-corrosion grade products, there may be some minor changes in the content.

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