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35C8 STEELby Ambhe Ferro Metal Processors
Medium-Carbon Steel

35C8 Steel Round Bars, Bright Bars & Hexagons

A medium-carbon engineering steel that balances strength, machinability, and weldability. Rolled and finished by Ambhe Ferro as rounds, bright bars, hexagons, and RCS — with a heat-wise mill test certificate on every dispatch.

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35C8 at a Glance

Grade
35C8 — medium-carbon unalloyed engineering steel
Nominal composition
~0.35% Carbon, ~0.75% Manganese
Equivalent grades
AISI/SAE 1035 · EN/DIN C35 (1.0501) · JIS S35C · BS 970 080M36 · GB 35
Supply condition
Hot rolled · annealed · normalised · bright (cold drawn / turned & polished)
Product forms
Rounds · Bright bars · Hexagons · RCS
Typical uses
Shafts, axles, studs, bolts, levers, forgings, light/medium-duty machine parts

What is 35C8 steel?

35C8 is a medium-carbon unalloyed steel carrying a nominal 0.35% carbon and 0.60–0.90% manganese. In its designation, the "35" denotes the carbon content (≈0.35%) and the "8" the manganese band (≈0.8%). It offers a dependable balance of strength, ductility, machinability, and weldability for general engineering.

35C8 sits a step above mild steels such as 1018 and IS 2062, and just below the higher-carbon EN8D and S45C family. It develops useful strength and hardness by normalising or by quench-and-temper, while remaining straightforward to machine, forge, and weld. Where a component needs more than mild steel can offer but does not justify an alloy grade, 35C8 is a common, cost-effective answer.

Internationally, 35C8 is the close counterpart of AISI/SAE 1035, DIN/EN C35 (1.0501), and JIS S35C. Ambhe Ferro rolls and finishes 35C8 across its product range and supplies each consignment with a heat-wise mill test certificate traceable to the heat number.

35C8 chemical composition

Typical 35C8 chemical composition, % by weight
ElementRange / Limit
Carbon (C)0.30 – 0.40
Manganese (Mn)0.60 – 0.90
Silicon (Si)0.10 – 0.35
Sulphur (S)0.045 max
Phosphorus (P)0.045 max

Typical composition for 35C8. Sulphur and phosphorus are each held to 0.045% maximum; tighter limits can be supplied to customer specification and are confirmed on the mill test certificate.

35C8 mechanical properties

Typical mechanical properties — normalised / as-rolled condition
PropertyMetricImperial
Tensile Strength550 – 640 MPa80,000 – 93,000 psi
Yield Strength320 – 370 MPa46,000 – 54,000 psi
Elongation (A5)18 – 22%
Reduction of Area≈ 40%
Hardness (annealed)150 – 180 HB
Hardness (normalised)170 – 200 HB
Hardened (thin sections)up to ≈ 48 – 55 HRC

Mechanical values are typical and depend on section size and heat-treatment condition. Properties to a specific drawing or standard are confirmed batch-by-batch on the mill test certificate.

Physical properties

Density7.85 g/cm³
Modulus of Elasticity≈ 200 GPa
Melting range (approx.)1480 – 1520 °C

What is 35C8 equivalent to?

35C8 is broadly equivalent to the international medium-carbon grades below. These are nearest-match cross-references — minor differences in composition and mechanical limits exist between standards.

35C8 international cross-reference (nearest match)
Standard / CountryDesignation
USA — AISI / SAE1035 (UNS G10350)
Germany — DIN / ENC35 (1.0501); C35E / Ck35 (1.1181)
Japan — JISS35C
UK — BS 970080M36 / 080A35
China — GB35
ISOC35

Always confirm the governing specification stated on your drawing or purchase order before substituting grades.

35C8 heat treatment

Typical heat-treatment guide for 35C8
ProcessTemperatureCooling
Forging1100 – 1250 °CAir cool; finish forging above 850 °C
Normalising850 – 880 °CAir cool
Annealing840 – 870 °CSlow furnace cool
Hardening850 – 880 °CWater quench (oil for thin sections)
Tempering550 – 660 °CAir cool

As a plain-carbon grade, 35C8 has limited hardenability and is best through-hardened in smaller sections. Water quenching of complex shapes carries a cracking risk — oil or a milder medium is preferred for intricate parts. Temper immediately after hardening.

What sizes and forms are available in 35C8?

Rounds

Hot rolled — 23.5 mm to 80 mm dia.

Bright Bars

Cold drawn / turned & polished — 22 mm to 63.5 mm

Hexagons

23.5 mm to 52.5 mm across flats

RCS

55 mm, 63 mm, 75 mm

Need a size or section outside this range? See the full size range or raise an enquiry — non-standard sizes are often available on a make-to-order basis.

Applications of 35C8 steel

Because 35C8 is reasonably strong and tough yet still easy to machine, forge, and weld, it is used widely across general and automotive engineering:

  • Shafts, axles, spindles, and connecting rods
  • Bolts, studs, nuts, and fasteners
  • Levers, links, brackets, and couplings
  • Forged components and forging stock
  • Light- and medium-duty gears, sprockets, and pins
  • Automotive and tractor / agricultural-implement parts
  • General machined components and machine-shop stock

Why source 35C8 from Ambhe Ferro

  • We roll it, we don't just stock it. Heat-to-heat consistency comes from our own rolling mill and bright-bar lines.
  • ISO 9001 certified with an in-house QC laboratory running chemical and physical tests on every heat.
  • Heat-wise mill test certificate on every dispatch; third-party inspection (e.g. SGS, BV, TÜV) arranged on request.
  • Multiple supply conditions — hot rolled, annealed, normalised, and bright (cold drawn / turned & polished).
  • Over 39 years serving the Mumbai–Pune–Nashik corridor, with quick dispatch from locations near JNPT.

Read more about our quality control process and why customers choose Ambhe.

How to order 35C8

Grade35C8
Minimum Order5 MT per size
Length5 – 6 metres standard; custom cut lengths on request or multiples thereof
Diameter23.5 mm to 80 mm (rounds); other forms as listed above
ConditionHot Rolled / Annealed / Normalised / Bright (Cold Drawn & Polished)
DocumentationHeat-wise mill test certificate; third-party inspection on request

To request pricing and availability, fill out our quotation form or email sales@ambhe.com.

35C8 steel — frequently asked questions

What is 35C8 steel?
35C8 is a medium-carbon unalloyed (plain-carbon) steel with a nominal 0.35% carbon and 0.60–0.90% manganese. It offers a good balance of strength, ductility, machinability, and weldability, and is widely used for shafts, axles, studs, fasteners, and general engineering components.
What is the chemical composition of 35C8?
Typical composition: Carbon 0.30–0.40%, Manganese 0.60–0.90%, Silicon 0.10–0.35%, Sulphur 0.045% max, and Phosphorus 0.045% max. Tighter limits can be supplied to customer specification.
What is 35C8 equivalent to?
35C8 is broadly equivalent to AISI/SAE 1035, DIN/EN C35 (1.0501), JIS S35C, BS 970 080M36, and GB 35. These are nearest-match cross-references; minor differences in composition and mechanical limits exist between standards.
Is 35C8 the same as EN8?
They are close but not identical. EN8 / EN8D carries roughly 0.40% carbon and develops higher strength and hardness, while 35C8 sits at about 0.35% carbon (closer to C35). For higher-strength duty, EN8D or S45C is usually preferred; for easier machining and forming with adequate strength, 35C8 is a sound, economical choice. See our 35C8 vs EN8D comparison.
Can 35C8 be hardened?
Yes. 35C8 responds to through-hardening by quenching from 850–880 °C followed by tempering. As a plain-carbon grade its hardenability is limited, so it hardens best in smaller sections — thin sections can reach roughly 48–55 HRC before tempering. Normalising is commonly used to refine grain and improve uniformity.
Is 35C8 weldable?
35C8 is weldable with normal precautions for a medium-carbon steel. Preheating and controlled cooling are recommended for thicker sections to avoid cracking, and post-weld stress relief is advisable on critical joints. For grades that weld more freely, consider 1018 or IS 2062.
What forms and sizes does Ambhe Ferro supply 35C8 in?
Rounds (23.5–80 mm), bright bars (22–63.5 mm), hexagons (23.5–52.5 mm across flats), and RCS (55/63/75 mm). Non-standard sizes are often available on a make-to-order basis — see our size range page or raise an enquiry.
Does 35C8 come with a test certificate?
Yes. Every dispatch is supplied with a heat-wise mill test certificate showing chemistry, mechanical properties, and condition, traceable to the heat number. Testing is carried out in our in-house QC laboratory, and third-party inspection can be arranged on request.
What is the minimum order quantity for 35C8?
The standard minimum is 5 MT per size for direct mill orders. Contact our sales team with your size and tonnage for current availability, pricing, and lead time.
Where can I buy 35C8 steel in India?
Ambhe Ferro Metal Processors rolls and supplies 35C8 from Mumbai, Maharashtra, serving buyers across India. Order rounds, bright bars, hexagons or RCS direct from the mill, with a minimum of 5 MT per size. Send your grade, size and tonnage through the quotation form or email sales@ambhe.com for pricing, availability and lead time.

Let's Talk 35C8

Tell us your grade, form, size, and tonnage. We'll respond with pricing, availability, and lead time — and a mill test certificate on every heat.

Request a Quotation Email sales@ambhe.com