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Hot Rolled Bright Surface 17-4PH Stainless Steel Rod with OD 6-300mm for High

China Hot Rolled Bright Surface 17-4PH Stainless Steel Rod with OD 6-300mm for High

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Hot Rolled Bright Surface 17-4PH Stainless Steel Rod with OD 6-300mm for High

MOQ： 50
Price： 1.85
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Model NO.	630
Shape	Round
Technique	Hot Rolled
Surface Treatment	Bright
Specification	OD 6-300mm
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)
Certification	ISO, AISI, ASTM, EN, DIN, JIS

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Product Details
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Product Specification


Model NO.	630	Shape	Round
Technique	Hot Rolled	Surface Treatment	Bright
Specification	OD 6-300mm	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)	Certification	ISO, AISI, ASTM, EN, DIN, JIS
High Light	Hot Rolled Stainless Steel Round Bar ，Bright Surface 17-4PH Stainless Steel Rod ，OD 6-300mm 630 Stainless Steel Bar

630 Stainless Steel 17-4PH Stainless Steel Rod

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), should be selected.

The alloy is subject to crevice or pitting attack if exposed to stagnant seawater for extended periods. It provides corrosion resistance in chemical, petroleum, paper, dairy, and food processing industries (equivalent to 304L grade).

Introduction

Grade 630 stainless steels are martensitic stainless steels that are precipitation hardened to achieve excellent mechanical properties. These steels achieve high strength and hardness following heat treatment, with heat and corrosion resistance similar to grade 304 steels.

This grade is available in solution treated conditions, allowing easy machining and age-hardening to attain high strength. The age treatment is carried out at low temperatures to avoid significant distortion, making it suitable for applications such as long shafts that don't require re-straightening after heat treatment.

Chemical Composition

Composition ranges for grade 630 stainless steels:

Element	Content (%)
C	0.07 max
Mn	1.0 max
Si	1.0 max
P	0.04 max
S	0.030 max
Cr	15.0 - 17.5
Ni	3.0 - 5.0
Cu	3.0 - 5.0
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
Mean Coefficient of Thermal Expansion 0-100°C (µm/m/°C)	10.8
Mean Coefficient of 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

Alternative Grades Comparison

Alternative 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 to resist more severe environments, but with much lower strength than 17-4PH.
2205	Much better corrosion resistance than 17-4PH, with lower strength (but not as low as 316).

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. During the process, superficial discoloration occurs followed by shrinkage.

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

Applications

Engine components
High strength and boat propeller shafts
Plastic moulding dies
Valves and gears

Company Details

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Business Type:

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Year Established:

2012 
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Total Annual:

500,000,000-800,000,000
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Employee Number:

100~200 
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Company Overview ： The company has an indoor warehouse of 5000 square meters and an open warehouse of 4000 square meters, which can fully meet the temporary turnover and phased storage of customers' steel pipe reservation. The subordinate processing plant has 6 sets of medium frequency h... Company Overview ： The company has an indoor warehouse of 5000 square meters and an open warehouse of 4000 square meters, which can fully meet the temporary turnover and phased storage of customers' steel pipe reservation. The subordinate processing plant has 6 sets of medium frequency h...

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TSING SHAN STEEL INDUSTRIAL LIMITED
NO.288,Youyi Road Xi Shan Dristrict , Wuxi, Jiangsu, China
https://www.316lsheet.com/

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