High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel

Product Details
Type: Stainless Steel Bars
Standard: ASTM, AISI, JIS
Grade: 600 Series
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Number of Employees
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Year of Establishment
2012-02-29
  • High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
  • High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
  • High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
  • High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
  • High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
  • High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
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  • Overview
  • PRODUCTS SPECIFICATION
  • MATERIAL DESCRIPTION
  • PRODUCTS PICTURES
  • PRODUCTS APPLICATION
  • CONTACT US
Overview

Basic Info.

Certification
ISO, AISI, ASTM, EN, DIN, JIS
Shape
Round
Technique
Hot Rolled
Surface Treatment
Bright
Transport Package
Wooden Box
Specification
OD 3-300mm
Origin
China
Production Capacity
50000kgs

Product Description

High Quality 17-4PH Stainless Steel Bright Bar / Black Bar  Grade 630 Stainless Steel

PRODUCTS SPECIFICATION
Products 17-4PH Stainless Steel Round Bar
Standard ASTM GB DIN EN 
Diameter 8 - 450mm
Length 6m /pcs or cutting as request
Finshing black bar / Bright Bar
Main Grade 201 301 303Cu 304 304L 309S 310S 316L 316Ti 317L 318 321 347 410 420 430 431 440a/b/c 904L 2205 2507 
Hastelloy C276 C4 C22 Inconel 600 625 Incoloy 800 825 825H.etc
Service Cutting, surface polishing , heat treatment
Brand Walsin  BAOSTEEL TISCO QINGSHAN
MATERIAL DESCRIPTION


17-4PH Stainless Steel

17-4 Precipitation Hardening also known as Type 630 is a chromium-copper precipitation hardening stainless steel used for applications requiring high strength and a moderate level of corrosion resistance. High strength is maintained to approximately 600 degrees Fahrenheit (316 degrees Celsius).

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. Very high yield strength up to 1100-1300 MPa (160-190 ksi) can be achieved.

The grade should not be used at temperatures above 572°F (300°C) or at very low temperatures. It has adequate resistance to atmospheric corrosion or in diluted acids or salts where its corrosion resistance is equivalent to Alloy 304 or 430.

 
Applications Standards
  • Offshore (foils, helicopter deck platforms, etc.)
  • Food industry
  • Pulp and paper industry
  • Aerospace (turbine blades, etc.)
  • 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 any of the standard hardenable stainless steels and is comparable to Alloy 304 in most media.

If there are potential risks of stress corrosion cracking, the higher aging temperatures then must be selected over 1022°F (550°C), preferably 1094°F (590°C). 1022°F (550°C) is the optimum tempering temperature in chloride media.

1094°F (590°C) is the optimum tempering temperature in H2S media.

The alloy is subject to crevice or pitting attack if exposed to stagnant seawater for any length of time.

It is corrosion resistant in some chemical, petroleum, paper, dairy and food processing industries (equivalent to 304L grade).

If you would like to know more about 17-4PH stainless steel then click 17-4PH Technical Data.

 

The properties mentioned below pertain to commonly available grade 630 bar products in ASTM A564. The specifications may not be similar to other forms such as forgings and plates.

Composition Composition of 17-4PH stainless Steel

The compositional ranges of grade 630 stainless steels are displayed below:

 
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

The table below outlines the mechanical properties of grade 630 stainless steels:

Table 2. Mechanical properties of grade 630 stainless steels

 
dition Tensile Strength (MPa) Yield Strength 0.2% Proof (MPa) Elongation (% in 50mm) Hardness
Rockwell C (HR C) 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

The physical properties of grade 630 stainless steels are given in the following table:

Table 3. Typical physical properties of grade 630 stainless steels

 
Mean Co-eff of Thermal Expansion (µm/m/°C) Thermal Conductivity
(W/m.K)
Specific Heat 0-100°C
(J/kg.K)
Elec Resistivity
(nΩ.m)
0-100°C 0-315°C 0-538°C At 100°C At 500°C
630 7750 197 10.8 11.6 - 18.4 22.7 460 800

Grade Specification Comparison

The typical grade specifications of 630 stainless steels are tabulated below:

able 4. Grade specifications for grade 630 stainless steels

Grade

UNS

No

Old British Euronorm

Swedish

SS

Japanese

JIS

BS En No Name
630 S17400 - - 1.4542 X5CrNiCuNb16-4 -

SUS 630

Table 5. Possible alternative grades to 630 stainless steels

Grade Reasons for choosing 17/4PH (630)
431 431 Has higher toughness than 17/4PH. Better availability in some sizes.
416 Free-machining martensitic stainless steel - better for repetition machining. Lower cost.
316 Higher corrosion resistance of 316 to resist more severe environments, but with much lower strength than 17/4PH.
2205 Much better corrosion resistance than 17/4PH, with a lower strength (but not as low as 316).
 

Corrosion Resistance

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Grade 630 stainless steels have good corrosion resistance in many environments. They exhibit improved resistance against stress corrosion cracking, if aged at 550°C or more. However, grade 630 steels are less resistant to solution treated Condition A, and hence these steels, even with considerable hardness, should not be used in this condition.

Heat Resistance

Grade 630 stainless steels have good resistance to oxidation. However, long-time exposure of grade 630 to temperatures of 370 to 480°C should be avoided, to prevent loss of toughness at ambient temperature. These grades should not be used at temperatures above age-hardening temperature, to avoid reduction of hardness and mechanical properties of the metal.

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 of these grades can be oil quenched.

Hardening - Grade 630 stainless steels are age-hardened at low temperatures to achieve the required mechanical properties. During the process, superficial discoloration occurs followed by shrinkage at 0.10% for condition H1150, and 0.05% for condition H900.

The table below shows the typical mechanical properties of grade 630 steels after solution treatment and age hardening:

Table 6. Typical mechanical properties of grade 630 steels achieved after solution treating

Cond. Hardening Typical Hardness Rockwell C Tensile Strength (MPa)
Temp (°C) Time (h)
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

Welding

Grade 630 stainless steels can be welded using all conventional methods, and they do not require pre-heating. Care should be taken in designing and welding of high strength steels to prevent weldment stresses.

Machining

Grade 630 stainless steels can be machined in their solution-treated condition. They have machining rates similar to that of grade 304 steels.

 

    PRODUCTS PICTURES
    High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
    High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
    High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
    High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
    High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
    High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel

     

    PRODUCTS APPLICATION

     

    Applications

    Some of the major applications of grade 630 stainless steels include:

    • Engine components
    • High strength and boat propeller shafts
    • Plastic moulding dies
    • Valves and gears 
    CONTACT US
     
    High Quality 17-4pH Stainless Steel Bright Bar / Black Bar Grade 630 Stainless Steel
     

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