POSCO High Mn Steels
2015. 06. 18
Steel Solution Marketing Department
I. POSCO Overview
II. High Mn Steel
III. Applications
IV. Summary
Founded in 1968, growing to a global company ...
30
20
10
1980 1990 20001970 2010
’10 : 33.0 M tpy
’73 1st Phase Constr. atPohang Completed(1.03 M tpy)’68
Est.
’83 Pohang SteelworksConst. Completed(9.1 M tpy)
’92 Gwangyang Steelworks Const. Completed (20.8 M tpy)
’94 Listed on the NYSE(1st Korean Company)
’00 Privatization
‘13 : 36.4 M tpy
‘14 : 37.7 M tpy
Global Recognition as the Most Competitive Steel Company
I. POSCO overview : POSCO History
Prod.(M tpy)
Crude Steel Production
1 POSCO (S. Korea)
The World’s Most Competitive Steel Maker
I. POSCO overview : POSCO History
Profile
Leading Steel Producer
Highly Diversified Products
Strong Financials
+=
Downstream business
Cheaper logistics
cost
Prompt delivery
Financial support
Welding technology
Painting technology
Parts evaluation
Forming technology
+Product Application
Tech.Commercial
Support
2014
2015
Global EVI Forum 2014
Application Technology
Application Tech. + Commercial Support
• Upgraded application tech.
• POSCO family support
• Downstream biz.
• Steel solution marketing
• Steel marketing
• Steel production
Definition
I. POSCO overview : Solution Marketing
Unique properties of high Mn steels
Low permeabilityof hydrogen
High work hardening rate
High stabilityof austenite
High fraction ofε-martensite
TWIP(Excellent strength & elongation)
Wear resistance High resistance to blast
Good low temperature toughness Non-magnetism
High resistance to
hydrogen embrittlement
Excellent absorption of externalimpact energy (high damping capacity)
Automobile,Wear resistant equipment(Slurry pipe, Heavy machinery),
Blast resistant door
LNG tank and pipe,Non-magnetic equipment
Hydrogen tank,Sour resistant pipe
Damping(Floor panel, Ship,
Steel stair)
II. POSCO High Mn steel : Performance
TWIP steel for U-AHSS
Automotive Steels in POSCO
AHSS, X-AHSS, U-AHSS
AHSS: Advanced High Strength Steels
DP, TRIP, CP, Martensite, etc.
X-AHSS: eXtra-Advanced HSS
25,000 MPa·% < TSxEl < 50,000 MPa·%
U-AHSS: Ultra-Advanced HSS
TSxEl > 50,000 MPa·%
TWIP steel: TS 1,000MPa, El. 65%
[Patent, 1995~, 2006]
III. Applications of High Mn steel : Automotive
High strength and excellent elongation for automotive parts
Front crash part Bumper beam
No crack under axial compressive strain 75%
Applications of TWIP steel
III. Applications of High Mn steel : Automotive
Front part with the improved crashworthiness
New Panda (FIAT)
World first application: FIAT (Italy)
Bumper beam
weight reduction & cost saving
Cryogenic high Mn steel
III. Applications of High Mn steel : Cryogenic service
○ Chemical composition and mechanical properties
○ Comparison with conventional cryogenic materials
Application for LNG industry
LNG storage tank Collaboration with customers
LNG carrier, LNG bunkering, on-shore terminal
Total cost reduction about 30~50%
JIP: shipbuilding company & 5 class societies
III. Applications of High Mn steel : Cryogenic service
LNG carrier LNG bunkering
LNG station LNG terminal
III. Applications of High Mn steel : Wear resistant service
○ Chemical composition and mechanical properties
○ Bending and welding properties
Wear resistant High Mn steel
III. Applications of High Mn steel : Non-magnetic material
○ Chemical composition and mechanical properties
○ High strength and good magnetic property
Non-magnetic High Mn steel