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UNS S17400 17-4PH Stainless Steel Plate with Precipitation Hardening High Strength and Corrosion Resistance

Certification	ISO, AISI, ASTM, EN, DIN, JIS
Minimum Order Quantity	50 kg
Price	US $3.65-5.85 / kg

Product Details

Model NO.	630	Shape	Flat
Technique	Hot Rolled	Surface Treatment	Bright
Width	10-2000mm	Production Capacity	50000kgs
Tensile Strength	1105-1310 MPa	Yield Strength	1000-1170 MPa
Elongation	10-16%	Hardness	28-44 HRC
Density	7750 Kg/m³	Thermal Conductivity	18.4-22.7 W/m.K
Specific Heat	460 J/kg.K	Electrical Resistivity	800 NΩ.m
Max Temperature	572°F (300°C)
Highlight	Precipitation Hardening Stainless Steel Plate , High Strength 17-4PH Stainless Steel , Corrosion Resistant UNS S17400 Plate

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Product Description

UNS S17400 AISI 630 17-4PH Stainless Steel Sheet Plate

17-4PH Stainless Steel Overview

17-4 Precipitation Hardening (Type 630) is a chromium-copper precipitation hardening stainless steel used for applications requiring high strength and moderate corrosion resistance. High strength is maintained to approximately 600°F (316°C).

General Properties

Alloy 17-4 PH is a precipitation hardening martensitic stainless steel with Cu and Nb/Cb additions. The grade combines high strength, hardness (up to 572°F / 300°C), and corrosion resistance. Mechanical properties can be optimized with heat treatment, achieving very high yield strength up to 1100-1300 MPa (160-190 ksi).

This grade should not be used at temperatures above 572°F (300°C) or at very low temperatures. It has adequate resistance to atmospheric corrosion and diluted acids or salts, with corrosion resistance equivalent to Alloy 304 or 430.

Applications & Standards

Applications	Standards
Offshore (foils, helicopter deck platforms) Food industry Pulp and paper industry Aerospace (turbine blades) Mechanical components Nuclear waste casks	ASTM A693 grade 630 (AMS 5604B) UNS S17400 EURONORM 1.4542 X5CrNiCuNb 16-4 AFNOR Z5 CNU 17-4PH DIN 1.4542

Corrosion Resistance

Alloy 17-4 PH withstands corrosive attacks better than standard hardenable stainless steels and is comparable to Alloy 304 in most media. For stress corrosion cracking risks, higher aging temperatures above 1022°F (550°C), preferably 1094°F (590°C), must be selected.

1022°F (550°C) is the optimum tempering temperature in chloride media, while 1094°F (590°C) is optimum in H2S media. The alloy is subject to crevice or pitting attack if exposed to stagnant seawater and is corrosion resistant in chemical, petroleum, paper, dairy, and food processing industries (equivalent to 304L grade).

Technical Specifications

Chemical Composition

Composition ranges for grade 630 stainless steels:

Element	Min (%)	Max (%)
C	-	0.07
Mn	-	1.00
Si	-	1.00
P	-	0.04
S	-	0.030
Cr	15.00	17.50
Ni	3.00	5.00
Cu	3.00	5.00
Nb+Ta	0.15	0.45

Mechanical Properties

Condition	Tensile Strength (MPa)	Yield Strength 0.2% Proof (MPa)	Elongation (% in 50mm)	Hardness Rockwell C (HRC)	Hardness Brinell (HB)
Solution Treated	1105 typ	1000 typ	15 typ	38 max	363 max
Condition 900	1310 min	1170 min	10 min	40 min	388 min
Condition 1150	930 min	724 min	16 min	28 min	277 min

Physical Properties

Property	Value
Density (kg/m³)	7750
Thermal Expansion 0-100°C (µm/m/°C)	10.8
Thermal Expansion 0-315°C (µm/m/°C)	11.6
Thermal Conductivity at 100°C (W/m·K)	18.4
Thermal Conductivity at 500°C (W/m·K)	22.7
Specific Heat 0-100°C (J/kg·K)	460
Electrical Resistivity (nΩ·m)	800

Heat Treatment

Solution treatment (Condition A): Grade 630 stainless steels are heated at 1040°C for 0.5 h, then air-cooled to 30°C. Small sections can be oil quenched.

Hardening: Grade 630 stainless steels are age-hardened at low temperatures to achieve required mechanical properties, with shrinkage of 0.10% for condition H1150 and 0.05% for condition H900.

Condition	Hardening Temp (°C)	Time (h)	Typical Hardness Rockwell C	Tensile Strength (MPa)
A	Ann	-	36	1100
H900	482	1	44	-
H925	496	4	42	1170-1320
H1025	552	4	38	1070-1220
H1075	580	4	36	1000-1150
H1100	593	4	35	970-1120
H1150	621	4	33	930-1080

Fabrication & Processing

Welding: Grade 630 stainless steels can be welded using all conventional methods without pre-heating. Care should be taken in designing and welding high strength steels to prevent weldment stresses.

Machining: Grade 630 stainless steels can be machined in their solution-treated condition, with machining rates similar to grade 304 steels.

Applications