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Electro-Slag-Remelting (ESR)
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Main Features
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| transverse surface uniform harness
Superb clarity, excellent structure uniformity and high gloss polishing effect
excellent texturing and polishing performance
good machinability
can be azotize and suitable for surface chrome plated
good abrasion resistance and toughness
comparing with 2738, welding, texturing, and polishing performance are well improved. |
Main Applications
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| ---suitable for plastic mould with the highest requirement of surface effect
---vehicle headlights, back mirror, and light system
---vehicle front bumper, radiator grille and other decorations
----TV frame, and back panel, copy machine frame
---vehicle dashboard and other big size parts |
Chemical Composition %
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C
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Si
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Mn
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Cr
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Mo
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Ni
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Special element
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0.27
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0.22
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1.55
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1.35
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0.30
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1.00
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---
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Physical Properties
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Heat expansivity
10m/(m x k)
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20-100℃
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20-200℃
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20-300℃
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20-400℃
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20-500℃
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11.8
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12.5
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13.1
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13.5
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14.2
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Heat conductivity
W/(m x k)
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20℃
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350℃
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35.7
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33.2
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Ultrasonic test
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| Dimensions are under 1200 x 800mm, follow the request of SEP 1921-test group 3 – class E, e, or DIN50602-K1 ≤10, or customer’s request |
Clarity
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| According to the method of ASTM E45 A， A: sulfide≤1.5， B:oxide，C: cilicate and :D: spheroidizing oxygen are all ≤1.0 or DIN50602-K4≤20， or depends on the customer’s request |
| Finished product status： pre-hardened and tempered |
Application status： 32-36 HRC |
Steel structure：Bainitic Microstructure |
Heat Treatment
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forging
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Sortness anealing
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Quench hardening
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tempering
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1050-800℃
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710-740℃
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850-880℃
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560-680℃
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