Product Description

AISI 630 (17-4 PH), a mixture of austenitic and martensitic steel grades, is a high quality stainless steel with high corrosion and resisting resistance.
Its welding capability is high. The main areas of use of this quality which is suitable for heat treatment are; Petro-chemistry, gear, valve, shaft parts and parts that will work under high voltage in corrosive environment.


630 (1.4542) stainless steel is a stainless steel quality which is used more and more every passing day in our country and all over the world, which enters into hardened stainless grade with aging, or in other words with sediment, which contains chromium and nickel, and which can be considered as a synthesis of austenitic and martensitic stainless classes.
630 quality stainless steel and other stainless steels in this group can provide various benefits compared to other qualities. One of the most important of these is: the stainless steels in this group have both corrosion resistance as austenitic stainless and have the ability to obtain further resistance by heat treatment like martensitic stainless steels.
The most densely used quality within this stainless group is (which takes its name from 17% chromium and 4% nickel that it contains) 17-4 PH.


Areas of Use :
AISI630 quality stainless steel is a type of steel that is rapidly used in the world since it has high mechanical strength, high hardness and good price-performance ratio. AISI 630 quality stainless is commonly used in pump and valve shafts, kitchen utensils, petrochemical industry, chemical plants and places with stainless steel decoration materials.
Defense industry is one of the most widely area of use of 1.4542, that`s also named as PH 17-4, stainless quality. This stainless steel material, which is preferred in the defense industry in our country, is frequently used due its high level of mechanical values and long life.


Stainless steel 17-4 PH powder is a multi-purpose 3d printer material with high strength, corrosion resistance and good thermal properties.


630-PH 17.4 Stainless Steel Material List (1.4542)

Material Type

Min Radius (mm)

Max Radius (mm)

Stainless Steel Bar



Material Type

Min Radius (mm)

Max Radius (mm)

Stainless Steel Sheet Plate

Min kalınlık:25mm, max thickness:100mm

Min kalınlık:50mm, max thickness:200mm

Stainless Steel Square

Min Measurement: 30x30mm

Max Measurement: 60x60



Chemical Composition









630 (1.4542)

0.07% max




0.33% max





Mechanic Features at Room Temperature:


630 (1.4542) X5CrNiCuNb16-4


Breaking Strength

1090 MPa


Yielding Strength,(0.2%)

950 MPa


Hardness, Rockwell (HB)

360 max




Summary of Quality Features

AISI 630 (1.4542) quality stainless steel is within stainless group with can be hardened with sedimentation.

AISI 630 (1.4542) quality stainless steel is also named as X5CrNiCuNb16-4 according to EN standard.

One feature of AISI 630 stainless steels is that they have a good level of corrosion resistance.

AISI 630 quality stainless steel has very high level of mechanic strength.

AISI 630 stainless steels have a good weldability.

AISI 630 quality stainless steels are magnetic and they attract magnets.