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Dura 17-7PH EN 1.4568, ASTM TYPE 631

The 17-7 stainless steel grade is particularly well suited for high strength, corrosion resistant applications.
It performs well at temperatures up to 600ºF.
Fabrication processes are similar to other chromium-nickel stainless steels.

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Stainless steel coil

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Product information

The typical chemical composition for this grade is given in the table below, together with composition limits given for the product according to different standards. The required standard will be fully met as specified on the order.

17-7PH, AISI 631, X7CRNIAL17-7, 1.4568 - SPECIFICATION AND APPLICATION

Stainless steel from the group of age-hardened PH with the highest content of Chromium - 17% and Nickel - 7% in relation to PH of grades 15-5 and 17-4. It has excellent strength properties, high hardness and elasticity, good corrosion resistance and resistance to high temperatures and deformation.

In terms of chemical composition, the corrosion resistance equals that of AISI 301 / 1.4310 steel, in terms of mechanical properties it is a much better choice for responsible parts and components exposed to fatigue. In the annealed state, the steel has an austenitic structure, after heat treatment of ageing it turns into martensite, increasing its strength properties along with obtaining magnetic properties.

The material is used on valve parts, tanks, springs, spring washers, food knives, diaphragms, low and high temperature parts, heat exchangers, special fittings and installations, machine constructions and components. Steel is intended for the aerospace, petroleum, chemical and petrochemical industries, energy, food and cryogenic industry in the form of strips, wires, sheets and bars.

Technical data

The chemical composition is given as % by mass.

Standard	Grade	C	Mn	Cr	Ni	Mo	N	Other
Typical	1.4568	0.08		17.0	7.0			Al:1.0
EN 10088-2	1.4568	≤0.09	≤1.0	16.0-18.0	6.5-7.8			Al:0.7-1.5
EN 10088-3	1.4568	≤0.09	≤1.0	16.0-18.0	6.5-7.8			Al:0.7-1.5
EN 10088-4	1.4568	≤0.09	≤1.0	16.0-18.0	6.5-7.8			Al:0.7-1.5

andard	Steel Grade
	Chemical composition %
	C:	Mn:	Si:	P:	S:	Cr:	Ni:	Al:
ASTM	17-7PH - 17-7 PH
ASTM	<0.09	<1.0	<0.5	<0.025	<0.025	16.00 - 17.25	6.50 - 7.75	0.75 - 1.25
UNS	S17700 - AMS 5529/5528 - AMS 5644 - AMS 5678
UNS	<0.09	<1.0	<1.0	<0.040	<0.030	16.0 - 18.0	6.5 - 7.7	0.75 - 1.50
EN	X7CrNiAl17-7 - 1.4568
EN	<0.09	<1.0	<0.7	<0.040	<0.015	16.0 - 18.0	6.5 - 8.3	0.7 - 1.5
SUS	SUS 631
SUS	<0.09	<1.0	<1.0	<0.040	<0.030	16.00 - 18.00	6.50 - 7.75	0.75 - 1.50

Standard	Grade	Rp0.2	Rp1.0	Rm	Elongation	Impact strength	Rockwell	HB	HV
		MPa	MPa	MPa	%	J
Product type: Cold rolled coil and sheet
Typical (thickness 1 mm)
EN 10088-2	1.4568			≤ 1030	≥ 19
Product type: Hot rolled coil and sheet
Typical (thickness 4 mm)		330	360	850	37			94
Product type: Hot rolled quarto plate
Typical (thickness 15 mm)		210	240	700	50
Product type: Wire rod
Typical		210	240	700	50

1)Elongation according to EN standard:A80 for thickness below 3 mm.A for thickness = 3 mm.Elongation according to ASTM standard A2” or A50.

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Factory appearance and appearance

The company mainly engaged in steel production, sales and other businesses. The main products include all kinds of steel plate, steel pipe, bar, profile and other materials and section steel. At the same time is a number of domestic large steel mill level agents, with a certain price advantage.

Packing and delivery

For many years, the company has been established, adhering to the purpose of "respecting contract, keeping faith, customer first, reputation first, quality first", adhering to the customer demand as the center, to "achieve what customers think, think what customers think" business philosophy, to "one sale, small profit, real price, timely delivery" business principle, we manage all kinds of specifications and materials of steel pipe and profile for customers.

Application field

The main supply fields are: aerospace, national defense equipment, military weapons, chemical industry, shipbuilding, nuclear energy, trains, containers, environmental protection, precision machining, auto parts, machinery, electronic products, molds, medical treatment Equipment, construction, decoration, etc.

Customer Visit Feedback

Over the years since its establishment, the company has been adhering to the purpose of "honoring contract, keeping faith, customer first, reputation first, quality first", adhering to the customer demand as the center, to "reach customer think, think customer think" business philosophy.

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WELCOME TO INQUIRE

The company guarantees the quality of its products with its strong financial strength, advanced management experience and strict quality control system for incoming goods. Excellent products and good reputation are well-known all over the country, and have won the trust and support of major steel mills and customers. Welcome to inquire, negotiate or visit our company in person. Welcome to inquire, negotiate or visit our company in person.

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FAQ

Q1:Will you offer samples?

A:Yes. We will provide samples according to your needs and send them out within three days after receiving payment.

Q2 : What product information do I need to provide?

A : Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.

Q3 : It's my first time to import steel products, can you help me with it?

A : Sure,we have agent to arrange the shipment, we will do it together with you.

Q4:Do you have the products in stock?

A:We have the products in stock. Also, we can produce for your order.

Q5:Do you offer after-sales services?

A : Of course. We have a perfect after-sales service system, if you have any questions, please feel free to contact us. We will do it to your satisfaction.

Q6:What kind of work does your company do?

A:Our company is a professional manufacturer. We mainly produce stainless steel plate/coil/round rod, carbon steel plate/coil,galvanized plate/coil, PPGI coil, roofing sheet and so on.

Q7:What are the advantages of your company？

A : We have international advanced production equipment, large factory buildings, strong company strength, perfect products and reliable quality.

Q8 : Are you a factory or trading company?

A : We are a professional steel factory with many years of experience, perfect manufacturing process, quality assurance!

Stainless steel coil