1. Investor Presentation November 2018
As of November 22, 2018

2. Forward-Looking Statements
This presentation contains certain forward-looking statements and information relating to Ternium S.A. and its subsidiaries (collectively, “Ternium”) that are based on the current beliefs of its management as well as assumptions made by and information currently available to Ternium. Such statements reflect the current views of Ternium with respect to future events and are subject to certain risks, uncertainties and assumptions. Many factors could cause the actual results, performance or achievements of Ternium to be materially different from any future results, performance or achievements that may be expressed or implied by such forward-looking statements, including, among others, changes in general economic, political conditions in the countries in which Ternium does business or other countries which have an impact on Ternium’s business activities and investments, changes in interest rates, changes in inflation rates, changes in exchange rates, the degree of growth and the number of consumers in the markets in which Ternium operates and sells its products, changes in steel demand and prices, changes in raw material and energy prices or difficulties in acquiring raw materials or energy supply cut-offs, changes in business strategy and various other factors. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described herein as anticipated, believed, estimated, expected or targeted. Ternium does not intend, and does not assume any obligation, to update these forward-looking statements.

3. Profile and Performance

4. Ternium’s Profile A leading steel company in Latin America
Net sales of USD 9.7 billion in 2017
Crude steel capacity of 12.4 million tons
Industrial facilities in Mexico, Argentina, Brazil, Colombia, USA and Central America
Vertically integrated, from iron ore mines to service centers
Focus on high value-added products
Participation in Usiminas1 control group
1 Usiminas: a leading company in the Brazilian flat steel market

5. EBITDA Margin (% of net sales)
Ternium’s Profile
Consistently superior results
1 Long steel Americas, global player, U.S. minimill and U.S. integrated (Source: Bloomberg)
Average
EBITDA Margin (% of net sales)
Ternium
Peers range1
Focus on high margin value-added products
Flexible production configuration
Diversified cost structure
Upstream and downstream integration
Best practices
Broad distribution network
Recruitment and retention of talent
Innovative culture, industrial expertise and long-term view
9M18
1H18

6. Performance Sustainable growth and resilient profitability
Steel shipments (million tons)
EBITDA (USD million)
Free cash flow (USD million)
Capital Expenditures (USD million)

7. Performance Solid financial position Strong balance sheet
Net debt to EBITDA ratio of 0.8x at the end of September 2018
USD1.5 billion five-year syndicated term loan facility to finance CSA acquisition in September 2017
Growing dividend payments
USD1.1 per ADS for 2017, 47% increase since 2013
4% dividend yield in 20172
Net Debt
(USD billion) 1
1.2x
1.1x
0.6x
1.4x
0.8x1
Annual dividends
(USD per ADS)
1 Net Debt/EBITDA Ratio (last 12 months EBITDA)
2 Dividend yield: Dividend / Average stock price (Source: Bloomberg)

8. Performance Quarterly EBITDA and net income EBITDA Margin
(% of net sales)
EBITDA per ton1
(USD)
1 Consolidated EBITDA divided by steel shipments.

9. Performance Continuous focus on profitability
Breakthrough initiatives to increase differentiation and reduce costs
Customer integration
Labor productivity
Exiros
Working capital optimization
Logistics management
Contractors management
Energy efficiency
Continuous improvement

10. Latin American Steel Markets

11. Latin American Steel Markets
Mexico became the largest steel market in the region
Mexico, Brazil, Argentina and Colombia account for approximately 80% of Latin America’s steel consumption
Mexico’s steel consumption CAGR of 6.0% in the last decade, among the highest in the region, driven by a dynamic manufacturing industry
Apparent steel use (million tons)
2018f
2018f
Source: Wordlsteel SRO Oct’18 - Canacero, Aço Brasil, Cámara Argentina del Acero, ANDI

12. Mexico

13. Ternium’s Markets - Mexico
Shipments to industrial customers growing consistently
Most attractive steel market in Latin America
50% increase in flat steel consumption since 2011
Opportunity to substitute imports of high- end products
Industrial market increasing relevance
NAFTA renegotiated successfully
Section 232 still pending
Safeguard in Mexico renewed
Apparent flat steel use – Mexico
(million tons)
Apparent flat steel use – Mexico
(% share)
Source: Alacero / Ternium estimates

14. Ternium’s Markets - Mexico
Strong industrial steel demand
Light vehicle production is expected to continue growing
Production in 2017 increased by 12% reaching 3.9 million units
New OEM capacity added during
Construction:
Weak environment as a result of decreasing government spending
Private activity offset decrease in government investment over the last years
Light vehicle production
(million units)
Construction spending (billion of constant MXN)
Source: AMIA / Global Insights / INEGI

15. Ternium’s Markets - Mexico
Strong growth of Ternium’s shipments
Ternium shipments in Mexico consistently growing
200,000-ton shipment increase in 2017
Broader product range enabled by upgrading of re-rolling facility in 2017
Differentiation in the commercial market through value-added products and services
Increasing customer digital connectivity
Nationwide coverage through distribution centers and regional distributors
Ternium steel shipments in Mexico
(million tons)
+4%
45%
58%
55%
42%
Ternium’s steel shipments by industry (2017)

16. Southern Region - Argentina

17. Apparent flat steel use – Argentina
Ternium’s Markets - Argentina
Decreased flat steel consumption expected in 2018
Flat steel use in Argentina revised down in 2018
Agribusiness sector affected by adverse weather conditions (grain production down 18% y-o-y in 2017/18)
Significant volatility in local financial markets
High interest rates
Public infrastructure investments decelerating
Decreased local demand for vehicles and home appliances
Apparent flat steel use – Argentina
(million tons)
-5%
Source: Alacero / Ternium estimates

18. Ternium’s Markets - Argentina
Positive outlook for agribusiness and energy
Agribusiness sector recovery
Record acreage sown for the coming season
Projected grain production +24% y-o-y
Development of the Vaca Muerta shale formation
Natural gas production rates accelerating
Announced investments over $12 billion
Construction sector
Expected decline in government spending in infrastructure that could be offset by kick-off of Private-Public Projects (PPP)
Renewable energy projects
Approved projects account for 13% of Argentina’s electricity generation capacity
Grain production – Argentina (million tons)
Shale gas production – Argentina (million m3/day)
Source: Ministerio de Agroindustria / G&G Energy Consultants /Ternium estimates

19. Developing Ternium’s industrial system

20. Ternium Brasil Strong foundation to continue growing
New 5 mtpy high-end slab facility in Brazil
Further integrate Ternium Brasil to take it to its full potential
Increase competitiveness in the high-end Mexican steel market vis-à-vis imports
Improve customer service supported by higher operational flexibility
Customized steel products
Coordinated product development
Enhanced logistics
Realize cost reduction opportunities
Coordinated procurement effort (Exiros)
IT integration
Inventory optimization
Benchmarking

21. New Hot Rolling Mill at Pesquería Industrial Center
A logical step after the addition of Ternium Brasil
Significant technological upgrade to expand TX’s product range in Mexico
Aimed at replacing high value-added steel imports and improving customer service
Targeting the automotive industry, as well as the home appliance, machinery, energy and construction sectors
Annual production capacity of 4.1 million tons (option to increase capacity to million tons)
Expected start up: end of 2020
Total investment of USD1.1 billion

22. New Coating Lines at Pesquería Industrial Center
Opportunity to grow in the high-end Mexican market
New hot-dipped galvanizing and painting lines
High-end value-added products for the home-appliance, heating-ventilation-air conditioning (HVAC) and automotive industries
Most advanced painting technology in Mexico
Annual production capacity:
Galvanizing: 350,000 tons
Painting: 120,000 tons
Expected start up:
Galvanizing: May 2019
Painting: March 2019
Total investment of USD280 million

23. Apparent long steel use
Colombia
Growth opportunity in the long steel market
Colombian steel market is the fourth largest in Latin America
Imports account for a significant share of long steel consumption
Ternium to expand its participation in the construction sector in the north/northwest of Colombia
Approximately 50% of steel rebar consumption
No local production
Expensive logistics from the mills in central Colombia
Greenfield rebar facility under construction
Annual capacity of 520,000 tons
Start up: end of 2019
Total investment of $90 million
Apparent long steel use
(million tons)

24. Conclusion

25. Conclusion
Consistently superior results in attractive steel markets in Latin America
Solid financial position and strong dividend payments
Successful implementation of business strategy geared toward sustainable profitable growth
TX Brasil integration and new investment program provide opportunity to grow and strengthen business in the region
Continued focus on generating long-term shareholder value

27. Appendix Corporate Structure Production Capacity CSA Acquisition
Shipments and Net Sales
Income Statement
Cash Flow Statement
Balance Sheet
Webcast Presentation Third Quarter 2018

28. Corporate Structure 71% Ternium México Las Encinas Peña Colorada 29%
Techint Group: 62%
Tenaris: 11%
Ternium (treasury shares): 2%
Public: 24%
Subsidiaries
Joint operations
Non-consolidated companies
71%
Ternium México
100%
50%
Las Encinas
Peña Colorada
29%
61%
Ternium Argentina4
39%
Other
50%
6%1
ArcelorMittal
28%1
CEU: 5%1
Nippon Steel & Sumitomo Metal: 32%1
TenarisConfab: 5%1
Other (ordinary shares): 23%1
Usiminas
Economic participation
100%
Ternium Brasil5
51%
Tenigal
49%
Nippon Steel &
Sumitomo Metal
100%
Ternium Colombia
100%
Ternium USA
100%
Ternium Int. Guatemala
48%
Techgen
30%
Tecpetrol
22%
1 Participation based on ordinary shares distributed
2 Participation based on total shares distributed
3 Net of non-controlling interest in TX Argentina
4 Formerly known as Siderar
5 Formerly known as CSA
50%
Exiros
50%
Tenaris

29. Production Capacity (2)
(1) Brazil, Southern US, Colombia and Central America
(2) Corresponds to Ternium Brasil

30. CSA Acquisition The Transaction
On Sep 7, 2017 Ternium acquired thyssenkrupp Slab International B.V. (tkSI) and its wholly-owned subsidiary CSA Siderúrgica do Atlântico Ltda. from thyssenkrupp AG (tkAG)
In addition, tkAG assigned to Ternium an agreement to supply slabs to thyssenkrupp’s former Calvert re-rolling facility in the U.S. (amended in Dec17)
Ternium disbursed EUR1.4 billion on a cash-free, debt-free basis, for the acquisition of both the tkSI shares and the slab supply agreement
The transaction was financed with a five-year syndicated term loan facility in a principal amount of USD1.5 billion
Ternium began consolidating tkSI’s balance sheet and results of operations in its consolidated financial statements in Sep17
Upon closing, CSA name was changed to Ternium Brasil

31. CSA Acquisition The Assets
CSA is a Brazilian state-of-the-art steel slab producer
5 mtpy capacity of high-grade steel slabs
490 MW combined cycle power plant
Deep-water harbor
Compact, efficient and environmentally friendly facility
Just-in-time iron ore supply (railroad)
Daniel Novegil, Ternium’s CEO at the time said: “This acquisition brings another state-of- the-art facility into Ternium’s industrial system, along with CSA’s highly-skilled personnel and know-how, thereby enhancing our differentiation and value-added capabilities in the steel production supply chain. Upon integration, Ternium customers will not only benefit from our expanded high-end steel slabs capacity, but also see the results of an enhanced product development and supply chain management effort that will increase our high-end steel specialization in Mexico and Argentina. We move forward as a strengthened organization across our strategic industrial sectors in Latin America.”

32. Shipments and Net Sales
Third Quarter 2018 and Nine Months 2018

33. Shipments and Net Sales
Full year 2017 and 2016

34. Income Statement

35. Cash Flow Statement

36. Balance Sheet

37. 3Q18 Results – Webcast Presentation Steel shipments
Total Shipments (thousand tons)
Mexico (thousand tons)
Southern Region (thousand tons)
Other Markets (thousand tons)
Other Markets
34%

38. 3Q18 and First Nine Months 2018 Results EBITDA and Net Results
3Q18 (million USD)
9M18 (USD million)
Equity in
Earnins of non-consolidated
companies
9M18 (million USD)
Equity in
Earnins of non-consolidated
companies

39. Dividends Payments (USD per ADS)
3Q18 and First Nine Months 2018 Results Free Cash Flow, Net Financial Debt and Dividends
Net Debt (USD billion)
Dividends Payments (USD per ADS)
1.2x
1.1x
0.6x
1.4x
0.8x1
1 Net Debt/EBITDA Ratio (last 12 months EBITDA)