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17-4PH Stainless Steel Round Bar - Precipitation Hardening High Strength Corrosion Resistant Alloy

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17-4PH Stainless Steel Round Bar - Precipitation Hardening High Strength Corrosion Resistant Alloy

MOQ:	50
Price:	3.65

Details Information

Product Description

Detail Information

Certification

ISO, AISI, ASTM, EN, DIN, JIS

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)

Coefficient Of Thermal Expansion:

10.8-11.6 µm/m/°C

Highlight:

Precipitation Hardening 17-4PH Round Bar

High Strength 17-4PH Stainless Steel Round Bar

Corrosion Resistant Precipitation Hardening Stainless Steel Bar

Product Description

17-4PH Stainless Steel Round Bar

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

General Properties

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

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

Applications & Standards

Applications:

Offshore equipment (foils, helicopter deck platforms)
Food processing industry
Pulp and paper industry
Aerospace components (turbine blades)
Mechanical components
Nuclear waste casks

Standards:

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 may experience crevice or pitting attack in stagnant seawater but provides excellent corrosion resistance in chemical, petroleum, paper, dairy, and food processing industries (equivalent to 304L grade).

Chemical Composition

Table 1: Composition ranges for grade 630 stainless steels

Grade	C	Mn	Si	P	S	Cr	Ni	Cu	Nb+Ta
630	0.07 max	1.0 max	1.0 max	0.04 max	0.030 max	15.0-17.5	3.0-5.0	3.0-5.0	0.15-0.45

Mechanical Properties

Table 2: Mechanical properties of grade 630 stainless steels

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

Table 3: Typical physical properties of grade 630 stainless steels

Density (kg/m³)	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)
7750	10.8 (0-100°C) 11.6 (0-315°C)	18.4 (At 100°C) 22.7 (At 500°C)	460	800

Alternative Grades Comparison

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 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 at 0.10% for condition H1150, and 0.05% for condition H900.

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

Condition	Hardening Temp (°C)	Hardening 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 boat propeller shafts
Plastic moulding dies
Valves and gears

Tags:

Products

MOQ:	50
Price:	3.65

Detail Information

Product Description

Detail Information

Certification

ISO, AISI, ASTM, EN, DIN, JIS

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)

Coefficient Of Thermal Expansion:

10.8-11.6 µm/m/°C

Minimum Order Quantity:

Price:

3.65

Highlight

Precipitation Hardening 17-4PH Round Bar

High Strength 17-4PH Stainless Steel Round Bar

Corrosion Resistant Precipitation Hardening Stainless Steel Bar

Product Description

17-4PH Stainless Steel Round Bar

General Properties

Applications & Standards

Applications:

Offshore equipment (foils, helicopter deck platforms)
Food processing industry
Pulp and paper industry
Aerospace components (turbine blades)
Mechanical components
Nuclear waste casks

Standards:

ASTM A693 grade 630 (AMS 5604B) UNS S17400
EURONORM 1.4542 X5CrNiCuNb 16-4
AFNOR Z5 CNU 17-4PH
DIN 1.4542

Corrosion Resistance

Chemical Composition

Table 1: Composition ranges for grade 630 stainless steels

Grade	C	Mn	Si	P	S	Cr	Ni	Cu	Nb+Ta
630	0.07 max	1.0 max	1.0 max	0.04 max	0.030 max	15.0-17.5	3.0-5.0	3.0-5.0	0.15-0.45

Mechanical Properties

Table 2: Mechanical properties of grade 630 stainless steels

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

Table 3: Typical physical properties of grade 630 stainless steels

Density (kg/m³)	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)
7750	10.8 (0-100°C) 11.6 (0-315°C)	18.4 (At 100°C) 22.7 (At 500°C)	460	800

Alternative Grades Comparison

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 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.

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

Condition	Hardening Temp (°C)	Hardening 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 boat propeller shafts
Plastic moulding dies
Valves and gears

Tags:

Cold Rolled Stainless Steel Sheet

Hot Rolled Stainless Steel Plate

Stainless Steel Checkered Plate

Stainless Steel Strip Coil

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Hastelloy Alloy

Nickel Alloy

Monel Alloy

Nitronic Alloy

Incoloy Alloy

Inconel Alloy

Titanium Alloy

Copper Material

Aluminum Material

17-4PH Stainless Steel Round Bar - Precipitation Hardening High Strength Corrosion Resistant Alloy

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Cold Rolled Stainless Steel Sheet

Hot Rolled Stainless Steel Plate

Stainless Steel Checkered Plate

Stainless Steel Strip Coil

Stainless Steel Welded Tube

Stainless Steel Seamless Tube

Stainless Steel Round Bar

Stainless Steel Angle Bar

Stainless Steel Flat Bar

Stainless Steel U Bar

Stainless Steel Square Bar

Stainless Steel Hex Bar

Duplex Stainless Steel

Hastelloy Alloy

Nickel Alloy

Monel Alloy

Nitronic Alloy

Incoloy Alloy

Inconel Alloy

Titanium Alloy

Copper Material

Aluminum Material

Precipitation Hardening 17-4PH Round Bar

High Strength 17-4PH Stainless Steel Round Bar

Corrosion Resistant Precipitation Hardening Stainless Steel Bar

321 Stainless Steel Rod,

Q345 stainless steel rod bar,