Category Archives: Blog

Monel K500 Alloy

Category : Blog

Companies in the marine, oil, and chemical processing industries use a great deal of Monel in their machinery. Monel is a nickel alloy, prized for its strength and ability to resist corrosion. Its applications include crude petroleum stills, gasoline and fresh water tanks, marine fixtures and fasteners, and chemical processing equipment. At All Metals & Forge, clients can order Monel in several forms, including Monel 400 and Monel K500.

As resistant to corrosive forces as nickel but less expensive and easier to work with, Monel is widely used in situations where seawater, petroleum, or de-aerated acids come into contact with machinery. When a piece of equipment needs to stand up to interior or exterior corrosives, Monel is the fail-safe solution. It also has higher maximum working temperatures than nickel, making it the preferred metal for boiler feed water heaters and other heat exchangers.

Bar Specification

UNS Type AMS ASTM

N05500

Alloy k500

4676

B-865

Chemical Composition

Grade C Mn S Si

Alloy k500

0.25

1.5

0.1

0.05

Mechanical Composition

Grade Ultimate Tensile (Mpa) Yield Strength (0.2% OS) (Mpa) Elongation (% in 50mm) Min Hardness (Rockwell B) max Hardness (Brinell) max

Alooy k500

965

690

17.0

29

280

Monel Alloy 400

Category : Blog

Monel 400 is a nickel-copper alloy (about 67% Ni – 23% Cu) that is resistant to sea water and steam at high temperatures as well as to salt and caustic solutions. Alloy 400 is a solid solution alloy that can only be hardened by cold working. This nickel alloy exhibits characteristics like good corrosion resistance, good weldability and high strength. A low corrosion rate in rapidly flowing brackish or seawater combined with excellent resistance to stress-corrosion cracking in most freshwaters, and its resistance to a variety of corrosive conditions led to its wide use in marine applications and other non-oxidizing chloride solutions. This nickel alloy is particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated. As would be expected from its high copper content, alloy 400 is rapidly attacked by nitric acid and ammonia systems.

Monel 400 has great mechanical properties at subzero temperatures, can be used in temperatures up to 1000° F, and its melting point is 2370-2460° F. However, alloy 400 is low in strength in the annealed condition so, a variety of tempers may be used to increase the strength.

Bar Specification

UNS Type AMS ASMT

N04400

Alloy 400

4675

B164

Chemical Composition

Grade C Mn P S Si Cr Ni

Alloy 400

0.3

2

-

0.24

0.5

-

70

Mechanical  Properties

Grade Tensile strength (Mpa) Yield strength (Mpa) Elongation at break (%) Brinell hardness Rockwell B hardness

Alloy 400

517-655

276-517

30-45

125-215

70-96

Super Alloy C276 HASTELLOY (UNS N10276)

Category : Blog

Super alloys or high performance alloys are available in a variety of shapes and contain elements in different combinations to obtain a specific result. These alloys are of three types that include iron-based, cobalt-based and nickel-based alloys. The nickel-based and cobalt-based super alloys are available as cast or wrought based alloys according to composition and application.

Super alloys have good oxidation and creep resistance and can be strengthened by precipitation hardening, solid-solution hardening and work hardening methods. They can also function under high mechanical stress and high temperatures and also in places that require high surface stability.

HASTELLOY(r) C276 is a wrought corrosion-resistant alloy that resists the development of grain boundary precipitates that degrade corrosion resistance.

Bar Specification

UNS Type AMS ASTM

N10276

Alloy C276

-

B-574

Chemical Composition

Grade C Mn P S Si Cr Ni Mo

Alloy C276

0.08

1

0.04

0.03

0.08

14.5-16.5

Balance

15-17

Mechanical  Properties

Grade Tensile Strength (MPa) min Yeild Strength 0.2% proof (MPa) Min Elongation (% in 50mm) Min Hardness (Rockwell B) max

Alloy C2276

601.2

204.8

56

87

Super Alloy C22 Hastelloy (UNS N06022)

Category : Blog

Super alloys contain a number of elements in a variety of combinations to achieve the desired result. They have good creep and oxidation resistance. They are available in different shapes, and can be used at very high temperatures and mechanical stress, and also where high surface stability is required. Cobalt-based, nickel-based, and iron-based alloys are three types of super alloys. All of these can be used at temperatures above 540°C (1000°F).

Bar Specification

UNS Type AMS ASTM

No6022

Alloy C22

-

B622

Chemical Specification

Grade Cr Mo Fe Mn Si P S C

Alloy C22

20-22.5

12.5-14.5

2-6

0.5

0.08

0.02

0.02

0.015

Mechanical Properties

Grade Elastic modulus

Alloy C22

206 Mpa

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