AISI 630 Plate

17-4PH is one of the most popular and most commonly used stainless chromium-nickel alloy steels with copper additive, precipitation hardened with martensitic structure. It is characterized by high corrosion resistance while maintaining high strength properties, including hardness.

Steel can operate in the temperature range from -29 ℃ to 343 ℃, while retaining relatively good parameters. In addition, the materials in this grade are characterized by relatively good ductility and their corrosion resistance is comparable to 1.4301 / X5CrNi18-10.

Steel can be welded by TIG, but the welding process requires the use of an annealed material. Otherwise the material at the joints will not retain the proper structure.

Stainless Steel Alloy 630 Chemical Composition

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

Mechanical properties of 17-4PH / AISI 630 / UNS S17400 according to ASTM A564:

• Delivery condition +A:

• HRC Hardness: <38

• HB Hardness: <363

• Delivery condition H900

• Tensile strength, Rm: >1310 MPa

• Yield point, RP0,2: >1170 MPa

• Delivery condition H925

• Tensile strength, Rm: >1170 MPa

• Yield point, Rp0,2: >1070 MPa

• HB Hardness: >375

• HRC Hardness: >38

• Impact resistance, KV21℃: >6.8 J

• Delivery condition H1025

• Tensile strength, Rm: >1070 MPa

• Yield point, Rp0,2: >1000 MPa

• Elongation, A: >12%

• Contraction, Z: >45%

• Delivery condition H1075

• Tensile strength, Rm: >1000 MPa

• Yield point, Rp0,2: >860 MPa

• Elongation, A: >13%

• Contraction, Z: >45%

• Delivery condition H1100

• Tensile strength, Rm: >965 MPa

• Yield point, Rp0,2: >795 MPa

• Elongation, A: >14%

• Contraction, Z: >45%

• Delivery condition H1150

• Tensile strength, Rm: >930 MPa

• Yield point, Rp0,2: >725 MPa

• Elongation, A: >16%

• Contraction, Z: >50%

• Delivery condition H1150M

• Tensile strength, Rm: >795 MPa

• Yield point, Rp0,2: >520 MPa

• Elongation, A: >18%

• Contraction, Z: >55%

• Delivery condition H1150D

• Tensile strength, Rm: >860 MPa

• Yield point, Rp0,2: >725 MPa

• Elongation, A: >16%

• Contraction, Z: >50%

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