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Hot Rolled 17-7PH Stainless Steel Round Bar Diameter 10 - 350mm SA276 Custom

China Hot Rolled 17-7PH Stainless Steel Round Bar Diameter 10 - 350mm SA276 Custom

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Hot Rolled 17-7PH Stainless Steel Round Bar Diameter 10 - 350mm SA276 Custom

MOQ： 500 kgs
Price： 3-5 USD/Kg
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Payment Terms	T/T, Western Union
Supply Ability	50 Ton per Month
Delivery Time	5 - 10 days
Packaging Details	wooden box or water resistant paper surround
Products Name	17-7PH Stainless Steel bar
Diameter	10 - 350mm
Length	6m or cutting any length as request
Surface	black or polishing
Service	Cutting
Standard	ASTM DIN GB EN
Other products	round bar, square bar, flat bar.etc
Technique	hot rolled
Brand Name	Delta
Model Number	17-7PH
Certification	ISO 9001
Place of Origin	China

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Product Details
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Product Specification


Payment Terms	T/T, Western Union	Supply Ability	50 Ton per Month
Delivery Time	5 - 10 days	Packaging Details	wooden box or water resistant paper surround
Products Name	17-7PH Stainless Steel bar	Diameter	10 - 350mm
Length	6m or cutting any length as request	Surface	black or polishing
Service	Cutting	Standard	ASTM DIN GB EN
Other products	round bar, square bar, flat bar.etc	Technique	hot rolled
Brand Name	Delta	Model Number	17-7PH
Certification	ISO 9001	Place of Origin	China
High Light	Hot Rolled 17-7PH Stainless Steel Bar ，Custom Cut Stainless Steel Round Bar ，SA276 Stainless Steel Bar with Warranty

Hot Rolled 17-7PH Stainless Steel Round Bar Diameter 10 - 350mm SA276 Custom Cutting in Length

Products Specification

Products Name	17-7PH Stainless Steel Round Bar
Grade	303,303Cu,304,304L,309S,310S,310H,316L,316Ti,316H,317L,321,329,347,410,415,420, 430F,431,440A/B/C,2205,2507,904l,254SMO,253MA,CD4MCU,XM-19,17-4PH,15-5PH,17-7PH,660,C276,600,601,625,718,800,800H,825,926.etc
Products Diameter Range	φ3mm - φ350mm
Length	6m/pcs or cutting any length as request
Surface	Pickling finishing, bright finishing
Standard	ASTM JIS,GB,DIN EN
Service	Cutting
Other Shape	Square , Flat, Hexagonal, Round.etc
Loading Port	Shanghai Port
MOQ	50 kgs

Hot Rolled 17-7PH Stainless Steel Round Bar Diameter 10 – 350mm SA276 Custom Cutting in Length

Overview

The Hot Rolled 17-7PH Stainless Steel Round Bar, available in diameters ranging from 10mm to 350mm, is a premium-grade precipitation-hardening (PH) stainless steel engineered for applications demanding high strength, excellent corrosion resistance, and dimensional stability at elevated temperatures. Compliant with ASTM A276/A276M-2017 standards, this semi-austenitic PH alloy—also known as UNS S17700 or AISI 631—offers a unique combination of formability in the annealed condition and exceptional mechanical properties after heat treatment.

Ideal for aerospace, defense, chemical processing, nuclear, and high-performance industrial sectors, our 17-7PH round bars are manufactured under strict quality controls and can be custom-cut to your exact length specifications, ensuring seamless integration into your production workflow.

Key Features & Benefits

High Strength-to-Weight Ratio: Achieves tensile strengths up to 1380 MPa (200 ksi) after aging.
Excellent Corrosion Resistance: Superior to standard martensitic stainless steels; comparable to 304 in many environments.
Controlled Phase Transformation: Utilizes a “conditioning” heat treatment to transform unstable austenite into martensite, followed by precipitation hardening.
Good Fabricability: In the annealed (Condition A) state, it exhibits ductility suitable for cold forming, machining, and welding.
Dimensional Stability: Minimal distortion during heat treatment due to low carbon content and controlled microstructure.
Custom Lengths Available: Cut-to-order service eliminates waste and reduces secondary processing costs.

Typical Applications

Industry	Application Examples
Aerospace	Landing gear components, jet engine parts, fasteners, springs
Defense	Missile components, ordnance hardware, structural brackets
Chemical Processing	Valves, pumps, shafts exposed to mild acids and chlorides
Nuclear	Instrumentation housings, control rod drive mechanisms
Industrial Machinery	High-strength shafts, gears, diaphragms, snap rings
Food & Beverage	High-strength conveyor components (e.g., frozen food belts)

Chemical Composition (ASTM A276 / UNS S17700)

Element	Content (%)
Carbon (C)	≤ 0.09
Manganese (Mn)	≤ 1.00
Phosphorus (P)	≤ 0.040
Sulfur (S)	≤ 0.030
Silicon (Si)	≤ 1.00
Chromium (Cr)	16.00 – 18.00
Nickel (Ni)	6.50 – 7.75
Aluminum (Al)	0.75 – 1.50
Iron (Fe)	Balance

Note: Aluminum is the key precipitation-hardening element, forming Ni₃Al intermetallic phases during aging.

Mechanical Properties (After Standard Heat Treatment)

The mechanical properties of 17-7PH are highly dependent on the heat treatment condition. Below are typical values for common conditions:

Condition	Process	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HRC)
Condition A	Annealed (1040°C, air cool)	1035 min	345 min	20 min	≤ 22
Condition TH1050	Austenite conditioning + Aging at 565°C	1310 min	1170 min	1–5	38–44
Condition RH950	Sub-zero treatment + Aging at 510°C	1380 min	1240 min	1–4	44–48

Custom heat treatment schedules available upon request for optimized performance.

Product Specifications

Parameter	Details
Material Grade	17-7PH (UNS S17700, AISI 631, 07Cr17Ni7Al)
Standard	ASTM A276/A276M-2017
Form	Hot Rolled Round Bar
Diameter Range	10 mm – 350 mm
Tolerance	±0.1 mm to ±1.0 mm (depending on size and customer requirement)
Surface Finish	As-rolled (scale), pickled, or machined (optional)
Length Options	Standard: 3m, 4m, 6m Custom Cutting: Any length from 100mm to 6000mm
Certification	Mill Test Report (MTR) per EN 10204 3.1/3.2 available
Packaging	Bundled with steel straps, moisture-resistant wrapping, seaworthy export packaging

Why Choose Our 17-7PH Round Bars?

✅ Precision Manufacturing: Produced in ISO 9001-certified mills with full traceability.
✅ Flexible Customization: Cut-to-length service reduces machining time and material waste.
✅ Global Compliance: Meets ASTM, AMS, and DIN standards; ideal for international projects.
✅ Technical Support: Our metallurgical team assists with heat treatment recommendations and application guidance.
✅ Fast Lead Times: Ready stock for common sizes; custom orders fulfilled within 2–4 weeks.

Heat Treatment Guidelines (Simplified)

To achieve optimal properties, 17-7PH typically undergoes a three-step process:

Solution Annealing (Condition A): Heat to 1040°C, hold, then air cool. This yields a ductile austenitic structure for forming.
Conditioning Treatment: Heat to 955°C, hold, then rapidly cool to -73°C (for RH950) or air cool (for TH1050). This promotes martensite formation.
Aging: Precipitation hardening at 510–565°C for 1–4 hours, depending on desired strength/toughness balance.

Always consult a qualified heat treater or refer to AMS 5528/AMS 5667 for aerospace applications.

Ordering Information

When placing an order, please specify:

Grade: 17-7PH (UNS S17700)
Standard: ASTM A276
Diameter: e.g., 50 mm
Length: e.g., 2500 mm (custom)
Quantity: in kg or pieces
Surface Finish: As-rolled, pickled, or ground
Heat Treatment Condition: As-supplied (usually Condition A) or pre-aged
Certification Requirements: MTR, chemical analysis, mechanical test report

Frequently Asked Questions (FAQ)

Q: Can 17-7PH be welded?
A: Yes, but only in the annealed (Condition A) state. Post-weld heat treatment is required to restore mechanical properties.

Q: How does 17-7PH compare to 17-4PH?
A: 17-7PH offers better ductility and fatigue resistance; 17-4PH achieves higher hardness faster but has lower toughness.

Q: Is 17-7PH magnetic?
A: Yes—after martensitic transformation (post-conditioning), it becomes ferromagnetic.

Q: What’s the maximum service temperature?
A: Continuous use up to 315°C (600°F); short-term exposure up to 480°C (900°F).

Conclusion

The Hot Rolled 17-7PH Stainless Steel Round Bar (10–350mm) represents the pinnacle of precipitation-hardening stainless technology—delivering unmatched strength, corrosion resistance, and thermal stability in a single alloy. With ASTM A276 compliance, custom cutting capabilities, and global technical support, our product ensures reliability in the most demanding engineering environments.

Whether you're designing a next-generation aircraft component or a high-cycle industrial spring, 17-7PH provides the performance backbone your project deserves.

17-7PH stainless steel round bar, ASTM A276 17-7PH, UNS S17700 bar, precipitation hardening stainless steel, hot rolled 17-7PH, custom cut stainless bar, 17-7PH diameter 10mm to 350mm, high strength stainless steel bar, aerospace grade 17-7PH, 17-7PH TH1050, 17-7PH RH950, cut to length stainless steel.

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Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...

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