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Products Description

17-4PH Stainless Steel Square Bar Overview

The 17-4PH stainless steel square bar is a precipitation-hardening martensitic stainless steel that combines 17% chromium and 4% nickel to deliver exceptional strength, hardness, and corrosion resistance. This premium material is ideal for applications requiring high performance and durability. Through precise heat treatment processes, the mechanical properties of 17-4PH can be tailored to meet specific requirements, making it a versatile choice for various industries.

Key Features

High Strength and Hardness: Achievable through precipitation hardening.
Excellent Corrosion Resistance: Suitable for harsh environments.
Customizable Properties: Heat treatment allows for tailored strength and toughness.
Superior Fabrication Characteristics: Easy to machine, weld, and form.
High Strength-to-Weight Ratio: Ideal for weight-sensitive applications.

Chemical Composition (Weight %)

Element	Cr	Ni	Cu	C	Mn	Si	P	S	Nb+Ta	Fe
Percentage	15.0-17.5	3.0-5.0	3.0-5.0	≤0.07	≤1.00	≤1.00	≤0.04	≤0.03	0.15-0.45	Balance

Mechanical Properties

Condition	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HRC)
Condition A	1100	1000	10	≤35
Condition H900	1310	1170	10	≤40
Condition H1025	1170	1070	12	≤38
Condition H1150	1000	860	13	≤35

Specifications and Dimensions

Standard Dimensions

Size (mm)	Length (mm)	Tolerance (mm)	Surface Finish
10 x 10	3000 - 6000	±0.1	Bright / Polished
20 x 20	3000 - 6000	±0.2	Bright / Polished
30 x 30	3000 - 6000	±0.3	Bright / Polished
50 x 50	3000 - 6000	±0.5	Bright / Polished

Available Standards

Standard	Description
UNS S17400	Unified Numbering System designation for 17-4PH stainless steel.
AMS 5643	Aerospace Material Specification for stainless steel bars.
ASTM A564	Standard specification for hot-rolled and cold-finished age-hardening stainless steel bars.
ASTM A693 Grade 630	Standard specification for precipitation-hardening stainless steel.

Stock Availability

Standard Lengths: 12' to 28'
Extended Lengths: 20' to 28' R/L
Multiple Size Options: Custom sizes available upon request.
Custom Cutting: Tailored to meet specific project requirements.

Applications

The 17-4PH stainless steel square bar is widely used in industries requiring high strength, corrosion resistance, and durability. Common applications include:

Aerospace Components
Chemical Processing Equipment
Petrochemical Equipment
Food Processing Machinery
Paper Industry Applications
General Metalworking
Precision Engineering

Key Benefits

Single-Step Age Hardening: Simplifies heat treatment processes.
Superior Corrosion Resistance: Performs well in harsh environments.
High Strength-to-Weight Ratio: Ideal for weight-sensitive applications.
Exceptional Durability: Long service life in demanding conditions.
Versatile Processing Options: Easy to machine, weld, and form.

Conclusion

The 17-4PH stainless steel square bar is a premium material designed for high-performance applications. Its unique combination of strength, hardness, and corrosion resistance makes it a preferred choice for industries such as aerospace, chemical processing, and precision engineering. Whether for structural components, machinery, or specialized equipment, 17-4PH stainless steel delivers unmatched reliability and performance.

For custom dimensions, heat treatment options, or additional specifications, contact our technical team today to discuss your requirements!

Additional Information

Heat Treatment Options

Condition	Heat Treatment Process	Typical Applications
Condition A	Solution Annealed	Fabrication and forming.
H900	Aged at 900°F (482°C) for 1 hour	High strength and hardness.
H1025	Aged at 1025°F (552°C) for 4 hours	Balanced strength and toughness.
H1150	Aged at 1150°F (621°C) for 4 hours	Improved corrosion resistance.

Surface Finish Options

Bright: Smooth and reflective finish.
Polished: High-gloss finish for aesthetic applications.
Black: Oxidized finish for added protection.

Let us help you find the perfect 17-4PH stainless steel square bar solution for your project!

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