Silicon-Molybdenum spheroidal graphite iron (SiMo)

Reference standards:

EN 16124, ASTM A 1095

Silicon-Molybdenum spheroidal graphite irons are alloys developed for high-temperature applications: silicon (up to about 5%) ensures oxidation resistance, while molybdenum (about 1%) stabilizes mechanical properties up to 700–730°C.
They are the reference material for exhaust manifolds in the automotive and marine sectors, where severe thermal cycles and mechanical stresses require reliable long-term behavior.

GJS SIMO CR

GJS SIMO 5 1

GJS SIMO CR

CHARACTERISTICS
Excellent tensile strength up to 730°C, good machinability.

APPLICATIONS
Marine and automotive engine manifolds

HARDNESS
230 – 270HB

GJS SIMO 5 1

CHARACTERISTICS
Excellent tensile strength up to 700°C, good machinability.

APPLICATIONS
Marine and automotive engine manifolds

HARDNESS
210 – 250HB

Wastegate pipe

14 kg

Engines and marine industry

Exhaust Manifold

12 kg

Engines and marine industry

Exhaust Manifold

7 kg

Engines and marine industry

Exhaust manifold

8 kg

Engines and marine industry

Reference table

EN16124:2012		ASTM A1095	SAE J2582	Generico
EN-GJS-SiMo25-5	5.3111	SG-SiMo
EN-GJS-SiMo30-7	5.3112	SG-SiMo
EN-GJS-SiMo35-5	5.3113	SG-SiMo	Grade 1
EN-GJS-SiMo40-6	5.3114	SG-SiMo	Grade 2
EN-GJS-SiMo40-10	5.3115	SG-SiMo	Grade 3	GJS SiMo 51
EN-GJS-SiMo45-6	5.3116	SG-SiMo
EN-GJS-SiMo45-10	5.3117	SG-SiMo		GJS SiMo 51
EN-GJS-SiMo50-6	5.3118	SG-SiMo
EN-GJS-SiMo50-10	5.3119	SG-SiMo
		MG-SiMo
		CG-SiMo		GJV SiMo
				GJS SiMoCr

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