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Yaw
Member

Join Date: Jul 2007
Posts: 5

Boiler Firebars Material

07/31/2007 5:26 AM

A boiler has the following specs for the fire grates:

FC300 CAST IRON 0.5%, Cr 1%, Cu and 0.5% Mo

A replacement with these specs is proposed:

FC250 CAST IRON WITH 1% Cr

What is/are the consequences in selecting the one with 1% Cr without the other alloying materials?

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davah
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Engineering Fields - Marine Engineering - New Member United Kingdom - Member - New Member Engineering Fields - Mechanical Engineering - New Member

Join Date: Jun 2007
Location: Birmingham UK
Posts: 253
Good Answers: 1
#1

Re: Boiler Firebars Material

07/31/2007 8:08 AM

Try www.key-to-steel.com it's a good site.

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MUKULMAHANT
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Engineering Fields - Systems Engineering - New Member Hobbies - Model Rocketry - New Member

Join Date: Dec 2006
Location: Long.92E,Lat.26N
Posts: 1336
Good Answers: 14
#2

Re: Boiler Firebars Material

08/18/2007 11:01 PM

Cu and Mo prices are going through the roof.

And neither give great extra benefits to Anti-Scaling nor Co-efficient of Heat Conductivity--**.

**σ=C/12+Si/28+Mn/55+Cr/52+Ni/59+W/184+Nb/93+Mo/96+---------

σ being aggregate addition--gm-atom/100g

you are fine even without the Cr. But you could do with more Si ,Mn-if readily available
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