Corona SteelIndustry Pvt Ltd
PT

Escolher idioma

Busca de produtosSolicitar orçamento
PT

Escolher idioma

Menu
Mapa do site07 entradas
Corona SteelFundada em 1955
Resources/Materials & grades/S355MC

Materials & grades

S355MC / 1.0976 hot-rolled strip for cold forming (EN 10149-2, close to ASTM A1011 HSLAS Grade 50, IS 5986 355)

S355MC (1.0976) is a thermomechanically rolled high-strength steel strip to EN 10149-2 with a minimum yield of 355 MPa, made for cold forming and bending. The nearest US, Indian and Japanese grades are ASTM A1011 HSLAS Grade 50, IS 5986 Grade 355 and JIS SPFH540, and none is identical.

Names by standard

What it is called in each region

RegionSystemDesignationNormaMatch
USAASTM A1011HSLAS Grade 50 (Class 1 and 2)Same 50 ksi (340 MPa) minimum yield class as S355MC (355 MPa), but different chemistry; Class 1 sets a 65 ksi (448 MPa) tensile minimum while S355MC allows 430–550 MPa.ASTM A1011/A1011MClosest equivalent
UKBS EN 10149-2S355MCThe UK uses the European standard.BS EN 10149-2Same material
EUEN 10027-1 nameS355MCS = structural, 355 = minimum yield in MPa, M = thermomechanically rolled, C = suitable for cold forming.EN 10149-2Same material
EN 10027-2 number1.0976EN 10149-2Same material
VDA 239-100HR340LAAutomotive designation Salzgitter lists next to S355MC; its yield class is lower (340 MPa).—Closest equivalent
ÍndiaIS 5986Grade 355IS 5986 covers hot-rolled sheet, plate and strip for forming and flanging. Total Materia gives 355 MPa yield and 420–530 MPa tensile; the standard text was not accessible.IS 5986Closest equivalent
JapanJIS G 3134SPFH540Automotive structural hot-rolled sheet. Its 540 MPa tensile minimum sits above S355MC's 430–550 MPa band, so it is a stronger grade.JIS G 3134Closest equivalent

On equivalence

  • No equivalent is identical. S355MC is a 355 MPa yield, micro-alloyed, cold-forming strip; ASTM A1011 HSLAS Grade 50, IS 5986 Grade 355 and JIS SPFH540 are the nearest national grades.
  • ASTM A1011 HSLAS Grade 50 has a 340 MPa (50 ksi) yield minimum and a 448 MPa (65 ksi) tensile minimum for Class 1, close to S355MC's 355 MPa and 430–550 MPa; Class 2 has a different tensile minimum.
  • JIS G 3134 SPFH540 needs at least 540 MPa tensile strength, which is the top of S355MC's band, so it suits only the strongest S355MC coils.
  • IS 5986 figures come from Total Materia because the IS 5986 text was not accessible; Total Materia also lists IS 5986 Grade 355 with a 18 % elongation minimum.
  • Salzgitter gives S ≤0.020 % (0.010 % if agreed) for S355MC, while SSAB's own Domex 355MC limits sulphur to 0.010 %; check the order and the mill certificate.
  • SSAB's A1011 HSLAS Grade 50 page mixes HSLAS and HSLAS-F wording; the composition shown matches HSLAS Grade 50 limits.

Chemical composition

Composition limits, mass %

ElementHSLAS Grade 50, Class 1 (heat analysis)USA · ASTM A1011/A1011MS355MC (1.0976), heat analysisEU · EN 10149-2 (as published by Salzgitter)Domex 355MC, 1.8–16 mmEU · SSAB Domex 355MC (ladle, tighter than EN)Grade 355Índia · IS 5986 (as listed by Total Materia)
C≤0.23≤0.12≤0.10≤0.20
Si—≤0.50≤0.03—
Mn≤1.35≤1.50≤1.50—
P≤0.04≤0.025≤0.025—
S≤0.04≤0.020 (0.010 if agreed)≤0.010—
Cr≤0.15———
Ni≤0.20———
Mo≤0.06———
V—≤0.20≤0.20—
Cu≥0.20 where copper steel is specified——0.20–0.35
Al—≥0.015 (total)≥0.015—
Ti—≤0.15≤0.15—
Nb—≤0.09≤0.09—
CEV——0.17 typical≤0.45

Mechanical properties

Strength and hardness

ConditionTensile strengthYield strengthElongationHardness
Thermomechanically rolled (EN 10149-2 S355MC)Specified, nominal thickness up to 8 mm; elongation A80 ≥19 % under 3 mm (80 mm gauge), A ≥23 % from 3 mm (5.65√S0 gauge)EN 10149-2 as published by Salzgitter and SSAB430–550 MPa62.4–79.8 ksi≥355 MPa≥51.5 ksi19–23 %—
Thermomechanically rolled (EN 10149-2 S355MC)Specified, thickness over 8 mm up to the 20 mm limit of EN 10149-2: the 20 MPa yield reduction above 8 mm that Salzgitter and Arvedi footnote applies to S650MC and S700MC only, so S355MC keeps 355 MPa; SSAB guarantees 355 MPa up to 16 mm for Domex 355MCEN 10149-2 as published by Salzgitter, ArcelorMittal and SSAB430–550 MPa62.4–79.8 ksi≥355 MPa≥51.5 ksi≥23 %—
Supplied to ASTM A1011 HSLAS Grade 50, Class 1Specified; tensile test longitudinal; elongation in 2 in (50 mm); elongation 22 % over 2.5 mm, 20 % up to 2.5 mmASTM A1011/A1011M as published by SSAB≥448 MPa≥65 ksi≥340 MPa≥50 ksi≥22 %—
Supplied to IS 5986 Grade 355As listed by Total Materia (the standard text was not accessible); treat as referenceTotal Materia420–530 MPa60.9–76.9 ksi≥355 MPa≥51.5 ksi≥18 %—
Supplied to JIS G 3134 SPFH540As listed by Total Materia; elongation A, thickness band not statedTotal Materia≥540 MPa≥78.3 ksi≥355 MPa≥51.5 ksi≥21 %—

In practice

Behaviour, heat treatment and uses

Characteristics

  • Low carbon (≤0.12 %) micro-alloyed with niobium, vanadium and titanium, so the strength comes from fine grains and precipitates rather than carbon; typical carbon equivalent is low (SSAB quotes CEV 0.17 for Domex 355MC).
  • Welds with all common methods and consumables; the low carbon equivalent keeps preheat requirements minimal in normal thicknesses.
  • Made for cold forming: Salzgitter recommends minimum inside bend radii of 0.25 times thickness up to 3 mm, 0.5 times from 3 to 6 mm and 1.0 times above 6 mm for bends to 90°.
  • SSAB's Domex 355MC datasheet gives tighter bend radii for its own product, from 0.2 times thickness (1.8–3 mm) to 0.5 times (6–16 mm) at 90°; use the supplier's figure for the coil you buy.
  • EN 10149-2 sets no impact requirement for the base grade; SSAB offers 355MC D (40 J at −20 °C) and 355MC E (27 J at −40 °C) variants for 6 mm and over.
  • Heat above about 580 °C can cost the guaranteed properties (SSAB): avoid stress relieving or hot forming above that.

Heat treatment

  • Delivered thermomechanically rolled and coiled; the strength is produced in the rolling mill and is not heat-treatable.
  • Do not normalise, quench or heat above about 580 °C after forming, because the thermomechanical properties are lost (SSAB).
  • Hot-dip galvanizing is possible: EN 10149-2 silicon categories exist for thin (category A, Si ≤0.03 % as in Domex 355MC) and thick (category B) zinc coatings.
  • Cold-formed and bent parts need no stress relief in normal practice.

Usos típicos

  • Automotive chassis and frame rails, cross-members and wheel parts
  • Commercial vehicle and trailer frames, truck bodies
  • Cranes, lifting equipment and agricultural machinery
  • Cold-formed structural sections, roll-formed profiles and press-brake parts
  • Light-weight steel frames and welded tubes where a 355 MPa yield is required

Sheet and strip

Similar grades compared

GrauC %Mn %Cr %Ni %Tensile, first listed condition
S355MC≤0.23≤1.35≤0.15≤0.20430–550 MPa
DD11 / SPHC≤0.15≤0.60≤0.15≤0.20≤440 MPa
DD12 / SPHD0.02–0.08≤0.45——≤420 MPa
DD13 / SPHE≤0.08≤0.40——≤400 MPa
DC01 / SPCC0.02–0.15≤0.60≤0.15≤0.20270–410 MPa
DC03 / SPCD0.02–0.08≤0.50≤0.15≤0.20270–370 MPa
DC04 / SPCE≤0.06≤0.50≤0.15≤0.20270–350 MPa
DC05 / SPCF≤0.02≤0.40≤0.15≤0.10270–330 MPa
DC06 / SPCG≤0.02≤0.40≤0.15≤0.10270–330 MPa
DX51D / 1.02260.02–0.15≤0.60——270–500 MPa

Composition from the US standard where one exists, otherwise the first standard listed on each grade's page. Strength conditions differ between grades; open a grade for its full table.

Perguntas respondidas

Common questions

What is the equivalent of S355MC?

The closest national grades are ASTM A1011 HSLAS Grade 50, IS 5986 Grade 355 and JIS G 3134 SPFH540. None is identical: yield, tensile range and chemistry differ, so check the figure your design relies on.

What does S355MC mean?

S means structural steel, 355 is the minimum yield strength in MPa, M means thermomechanically rolled and C means suitable for cold forming. It is covered by EN 10149-2.

What is the minimum bend radius of S355MC?

Salzgitter recommends 0.25 times thickness up to 3 mm, 0.5 times from 3 to 6 mm and 1.0 times above 6 mm for bends up to 90°. SSAB's Domex 355MC allows 0.2, 0.3 and 0.5 times thickness in the same bands. Use your supplier's figure.

Is S355MC weldable?

Yes. With carbon at 0.12 % or less and a typical carbon equivalent near 0.17 (SSAB), it welds by common processes without special preheat in normal thicknesses. Avoid prolonged heating above about 580 °C.

What is the difference between S355MC and S355J2?

S355J2 is a normal hot-rolled structural plate and section steel to EN 10025-2; S355MC is a thermomechanically rolled strip to EN 10149-2 with lower carbon, finer grain and a guaranteed bend radius for cold forming.

From the Corona catalog

Need a part made to this specification?

Send the drawing, the material or grade, the finish, the quantity and the delivery country. The team reviews the requirement and the manufacturing route.

Iniciar uma consulta

Keep reading

S355J2S355J2 is a common higher-strength structural steel of EN 10025-2, with a minimum yield of 355 MPa (51 ksi) up to 16 mm and a tensile strength of 470–630 MPa.A572 Grade 50ASTM A572 Grade 50 is a high-strength low-alloy structural steel with a minimum yield of 345 MPa (50 ksi) and a minimum tensile strength of 450 MPa (65 ksi).DD11 / SPHCDD11 (1.0332) is the commercial-quality grade of EN 10111, a low-carbon hot-rolled strip made for cold forming.Structural steel gradesStructural steel grades in the USA, UK, EU, India and Japan line up by minimum yield strength: about 250 MPa (A36, S235/S275, E250, SS400), about 350 MPa (A572 Grade 50 / A992, S355, E350, SM490) and about 410–450 MPa (A572 Grade 60/65, S450, E410/E450, SM570).EN 10027 names and numbersEuropean steels carry two identifiers under EN 10027: a steel name (Part 1) such as S235JR, C45 or 42CrMo4 that describes the steel's use or chemistry, and a material number (Part 2) such as 1.0503 or 1.7225.JIS steel designationsJapanese JIS steel symbols start with S for steel and add letters for the steel family or its use, but the number means different things in different standards.

References

Sources

  1. Salzgitter Flachstahl: high-strength steels for cold forming, thermomechanically rolled (S355MC) — EN 10149-2 S355MC composition, yield, tensile, elongation and recommended minimum bend radius.
  2. SSAB: Domex 355MC datasheet — Yield, tensile, elongation, minimum bend radius by thickness; Charpy variants B, D, E; typical CEV 0.17.
  3. SSAB: ASTM A1011 HSLAS Grade 50 — Composition limits and Class 1 tension requirements.
  4. SSAB: EN 10149-2 thermomechanically rolled steels for cold forming — SSAB's overview of the EN 10149-2 grades it supplies (S355MC and others).
  5. Total Materia: IS 5986 Grade 355 — Composition and mechanical properties for IS 5986 Grade 355; the IS 5986 standard text was not accessible.
  6. Total Materia: JIS SPFH 540 — Tensile ≥540 MPa, yield ≥355 MPa, elongation ≥21 %; composition behind registration.
  7. ASTM A1011/A1011M: hot-rolled carbon, structural, HSLA and UHSS sheet and strip (abstract) — Scope: CS, DS, SS, HSLAS, HSLAS-F and UHSS designations; the standard text is paywalled.
  8. ArcelorMittal Industry catalogue: S355MC (EN 10149-2, data sheet H20) — S355MC composition (S ≤0.020 %), 355 MPa yield, 430–550 MPa tensile, A ≥23 % for 6–20 mm; no yield reduction.
  9. Arvedi: microalloyed high strength steels (EN 10149-2) — S355MC composition; the 20 MPa yield reduction above 8 mm is footnoted on S650MC and S700MC only.
  10. H2ABC: ASTM A1011/A1011M-2018(a) HSLAS Grade 50 [340] Class 1 — Class 1 composition; yield 340 MPa, tensile 450 MPa, elongation 22 % over 2.5 mm and 20 % up to 2.5 mm.

Values summarize published limits and typical data. The governing standard and the current edition control; check them before specifying.