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Master Steel Jakarta

operating

PT The Master Steel MFG · EAF route · Cakung, Asia Pacific, Indonesia

GEM wiki

Master Steel Jakarta is a scrap-based steel plant: an electric arc furnace melts recycled steel scrap into new crude steel. The liquid steel is solidified into semi-finished shapes by continuous casting. The plant has a crude steel capacity of about 2.0 million tonnes per year. Its main products are wire rod, rebar, sections, mesh, bar, channel, angle.

Process Route

EAF

Timeline

Operating since 1972

Emissions

2025

0.29 Mt CO₂e

0.27 t CO₂e per tonne of steel

Typical EAF route: 0.5–0.7 t/t

Modelled estimate (Climate TRACE), not reported data. Methodology

Capacity (ttpa)

Crude Steel

2,000

EAF

2,000

Steel Units

EAF
unknown EAF (1)operating
2,000 ttpa80 twiki

Inputs & Energy

Power natural gas

Steel Products

wire rod, rebar, sections, mesh, bar, channel, angle

Ownership

Owner PT The Master Steel MFG

Parent PT The Master Steel MFG [100.0%]

Workforce 2,000 employees

Country Context

Indonesia crude steel production (USGS). Plant line shows nominal capacity, not output.

Learn the processes this plant uses

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Plant data sourced from the Global Iron & Steel Tracker (March 2026), Global Energy Monitor. Licensed under CC BY 4.0.

Production data: USGS Minerals Yearbook — Raw Steel: World Production by Country or Locality (2019 edition; 2022 and 2023 early release tables). U.S. Geological Survey, public domain. EAF/BOF splits: USGS Minerals Yearbook (2023 estimates).

Facility emissions estimates from Climate TRACE. Licensed under CC BY 4.0.