Werkstoff 1.4542 AISI 630

17-4 PH Werkstoff 1.4542 AISI 630 is a martensitic stainless steel with excellent mechanical properties and remarkable corrosion resistance. Due to its chemical composition that includes chromium, nickel, and copper, this material can achieve high hardness and strength through heat treatment aging (precipitation). The use of 17-4 PH Werkstoff 1.4542 AISI 630 in the production of fasteners offers several advantages:

• High Mechanical Strength: After aging treatment, it can reach a tensile strength of up to 1100-1300 MPa.
• Corrosion Resistance: The presence of chromium provides good corrosion resistance superior to carbon steels and conventional martensitic stainless steels.
• Good Workability: Before the aging treatment, the material is relatively soft and can be worked with ease.

These characteristics make 17-4 PH Werkstoff 1.4542 AISI 630 ideal for bolting in industries such as energy, machine building, where mechanical strength and corrosion resistance are essential.

CHEMICAL COMPOSITION 17-4 PH Werkstoff 1.4542 AISI 630

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Element	Min	Max
Ni	3.0	5.0
Cr	15.0	17.5
P		0.040
Nb+Ta	0.15	0.45
C		0.07
Mn		1.00
Yes		1.00
P		0.040
Cu	3.0	5.0
S		0.03

MECHANICAL PROPERTIES 17-4 PH Werkstoff 1.4542 AISI 630

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Condition	Heat treatment (°C)	Time (h)	Rm MPa min	Rp 0.2 MPa min	Min Hardness (HRC)
H900	480	1	1310	1170	40
H925	495	4	1170	1070	38
H1025	550	4	1070	1000	35
H1075	580	4	1000	860	32
H1100	595	4	965	795	31
H1150	620	4	930	725	28
H1150M	760 + 620	2 + 4	795	520	24
H1150D	620 + 620	4 + 4	860	725	24

PHYSICAL FEATURES 17-4 PH Werkstoff 1.4542 AISI 630

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Bulk density: at 20°C 7.75 kg/dm³ Modulus of elasticity: at 20°C 196,000 N/mm² Linear expansion coefficients: 108 µm/m °C (10 – 100°C)

CORRESPONDENCE AND SPECIFICATIONS 17-4 PH Werkstoff 1.4542 AISI 630

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Standard	Description
EN	10088-3
AISI	630
ASTM	A564
UNS	S17400
JIS	JUS630
NACE	MR0175