Steelveron

Alloy Steel Flanges

Steelvron is a leading Alloy Steel Flanges Supplier, Manufacturer, and Exporter, providing premium-grade flange solutions designed to meet stringent international standards. With extensive experience in supplying Alloy Steel flanges globally, we cater to industries such as oil & gas, petrochemical, power generation, shipbuilding, and chemical processing.

Overview

Our Alloy Steel flanges are manufactured in compliance with ASTM, ASME, DIN, EN, and JIS standards, ensuring superior quality, durability, and performance. Steelvron specializes in a wide range of alloy steel grades including ASTM A182 F11, F22, F5, F91, F316, F321, and other high-performance grades suitable for high-temperature and high-pressure applications.

As a trusted Alloy Steel Flanges Supplier, we offer flanges in multiple types including Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint, and Long Weld Neck Flanges. Every flange is engineered with precision and subjected to rigorous quality checks to ensure reliability, mechanical strength, and corrosion resistance, making Steelvron a globally recognized name for alloy steel flange solutions.

Technical Specifications of Alloy Steel Flanges

Standards:

ASTM A182 / A105, ASME SA182, DIN, EN, JIS, BS, ANSI

Grades Available:

F1, F5, F9, F11, F12, F22, F91, F316, F321, F347

Size Range:

½” (15 NB) to 48” (1200 NB)

Pressure Ratings:

Class 150, 300, 600, 900, 1500, 2500

Face Type:

Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)

Finish:

CNC Machined, Smooth Finish, Serrated Finish

Forms:

Weld Neck, Slip-On, Blind, Lap Joint, Threaded, Socket Weld, Long Weld Neck

Chemical Properties Of Alloy Steel Flanges

Grade	C (max)	Mn (max)	Si (max)	P (max)	S (max)	Cr	Ni	Mo	V
F5 / F9	0.10	0.50	0.50	0.025	0.015	0.5–0.9	0.4–0.7	0.4–0.6	—
F11	0.10	0.50	0.50	0.025	0.015	1.0–1.25	0.4–0.7	0.44–0.65	—
F22	0.12	0.50	0.50	0.025	0.015	2.0–2.5	0.30–0.60	0.85–1.05	—
F91	0.09	0.50	0.40	0.020	0.010	8.0–9.5	0.20–0.50	0.85–1.05	0.18–0.25

Physical Properties of Alloy Steel Flanges

Property

F5 / F9

F11

F22

F91

Density (g/cm³)

7.85

7.85

7.85

7.8

Melting Point (°C)

1425–1460

1420–1460

1400–1450

1370–1420

Tensile Strength (MPa)

490–650

480–620

480–620

620–750

Yield Strength (0.2% Proof, MPa)

205

205

205

450

Elongation (%)

35

35

35

25

Hardness (Brinell HB)

217

220

230

290

Modulus of Elasticity (GPa)

200

200

200

200

Thermal Conductivity (W/m·K)

15.5

15.0

14.5

13.5

Electrical Resistivity (µΩ·m)

0.75

0.78

0.80

0.85

Mechanical Properties Of Alloy Steel Flanges

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
F5 / F9	480–650	205–250	35
F11	480–620	205–250	35
F22	480–620	205–250	35
F91	620–750	450	25

Types Of Alloy Steel Flanges We Offer

Alloy Steel Weld Neck Flanges

Alloy Steel Slip On Flanges

Alloy Steel Blind Flanges

Alloy Steel Socket Weld Flanges

Alloy Steel Threaded Flanges

Alloy Steel Lap Joint Flanges

Alloy Steel Spectacle Blind Flanges

Alloy Steel Reducing Flanges

Alloy Steel Orifice Flanges

Alloy Steel Ring Type Joint Flanges

Alloy Steel Square Flanges

Materials We Offer

Carbon Steel Flanges

Hastelloy Flanges

Hastelloy C22 / C276 Flanges

Monel Flanges

Monel 400/K500 Flanges

Inconel and Incoloy Flanges

Inconel 600/601/625/718 Flanges

Incoloy 800/800H/800HT/825 Flanges

Alloy 20 Flanges

FAQ

Your complete guide to understanding Steelvron’s products, materials, certifications, and industrial applications worldwide

Why choose Steelvron as an Alloy Steel Flanges Supplier?

Steelvron delivers international-standard flanges, timely supply, and customized solutions across multiple alloy steel grades.

Which alloy steel grades are suitable for high-temperature service?

F5, F9, F11, F22, and F91 are designed for high-temperature and pressure applications.

What standards do your Alloy Steel Flanges comply with?

ASTM, ASME, ANSI, DIN, EN, and JIS standards.

Can you provide customized flange dimensions?

Yes, we manufacture flanges per client specifications, drawings, and material requirements.

Are these flanges suitable for high-pressure systems?

Absolutely, our Alloy Steel flanges are engineered for high-pressure applications in critical industries.

What is the maximum size of Alloy Steel Flanges available?

Steelvron supplies flanges up to 48” (1200 NB).

Can Alloy Steel Flanges be used in corrosive environments?

Yes, grades like F91 and F22 offer excellent corrosion resistance in chemical and industrial environments.

Why Choose Us?

Global Expertise

Trusted manufacturer, supplier, and exporter of Alloy Steel Flanges worldwide.

Complete Range

Comprehensive portfolio covering all Alloy Steel Flanges materials and types, ensuring broad compatibility.

Certified Quality

ISO-certified facilities ensure strict manufacturing and testing, delivering precision products consistently.

International Standards

Products meet ASME, ANSI, DIN, EN, BS, and JIS norms, ensuring acceptance.

Custom Solutions

Supplying standard and tailor-made Alloy Steel Flanges, crafted to match exact specifications.

Worldwide Reach

Exporting to 50+ countries with a proven record of client satisfaction.

Property	F5 / F9	F11	F22	F91
Density (g/cm³)	7.85	7.85	7.85	7.8
Melting Point (°C)	1425–1460	1420–1460	1400–1450	1370–1420
Tensile Strength (MPa)	490–650	480–620	480–620	620–750
Yield Strength (0.2% Proof, MPa)	205	205	205	450
Elongation (%)	35	35	35	25
Hardness (Brinell HB)	217	220	230	290
Modulus of Elasticity (GPa)	200	200	200	200
Thermal Conductivity (W/m·K)	15.5	15.0	14.5	13.5
Electrical Resistivity (µΩ·m)	0.75	0.78	0.80	0.85

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