Materials & grades
DC03 (1.0347) / ASTM A1008 DS / IS 513 CR2 / JIS SPCD cold-rolled sheet
DC03 (1.0347) is the drawing-quality cold-rolled low-carbon steel sheet of EN 10130, used for pressed and drawn parts of moderate depth. Its nearest names are ASTM A1008 DS, IS 513 CR2 (D) and JIS G 3141 SPCD.
Names by standard
What it is called in each region
| Region | System | Designation | Norme | Match |
|---|---|---|---|---|
| USA | ASTM A1008 | DS Type BDrawing steel with carbon 0.02–0.08 % and aluminium 0.02 % minimum. Type A has no minimum carbon and only 0.01 % minimum aluminium. Typical yield 150–240 MPa and r-bar 1.3–1.7. | ASTM A1008/A1008M | Closest equivalent |
| ASTM (legacy) | A619 DQOld drawing-quality designation that ArcelorMittal still lists against DC03. ASTM withdrew A619 in 1997 without naming a replacement; drawing-quality sheet is now ordered to A1008 DS. | ASTM A619 | Closest equivalent | |
| UK | BS EN 10130 | DC03The UK adopts the European standard. | BS EN 10130 | Same material |
| BS 1449 Part 1 (legacy) | CR3 / CR2Withdrawn. One cross-reference table pairs DC03 with CR3 and CR2 without saying which is closer. Do not confuse with IS 513 CR2 and CR3. | BS 1449-1 | Closest equivalent | |
| EU | EN 10027-1 name | DC03 | EN 10130 | Same material |
| EN 10027-2 number | 1.0347 | EN 10130 | Same material | |
| EN 10130:1991 (legacy) | FeP03Superseded designation of the 1991 edition. | EN 10130:1991 | Equivalent | |
| DIN 1623 (legacy) | St 13 (RRSt 13)Superseded German names; Salzgitter gives St 13, cross-reference tables give RRSt 13. | DIN 1623-1 | Equivalent | |
| Inde | IS 513 | CR2 (D, drawing)From IS 513:2008. Yield 240 MPa maximum and tensile 370 MPa maximum agree with DC03; the A80 minimum is 30 % against 34 % and there is no r or n requirement. | IS 513 | Closest equivalent |
| IS 513 (pre-2008) | D (drawn quality)Old name for CR2. | IS 513 | Closest equivalent | |
| Japan | JIS G 3141 | SPCDDrawing quality. Carbon 0.10 % maximum as for DC03; manganese and phosphorus limits are a little looser (0.50 % and 0.040 %). | JIS G 3141 | Equivalent |
On equivalence
- DC03, DS Type B, CR2 and SPCD all describe drawing quality but are not identical. A1008 DS limits P and S to 0.020 % each, tighter than DC03's 0.035 %, while IS 513 CR2 allows 0.040 % P and 0.035 % S.
- IS 513 CR2 has the same yield limit (240 MPa) and tensile limit (370 MPa) as DC03 but a lower A80 minimum (30 % against 34 %) and no r90 requirement, so deep pressings may behave differently.
- ASTM A1008 gives only typical properties for DS (yield 150–240 MPa, r-bar 1.3–1.7), so there is no mandatory mechanical match to EN 10130.
- SPCD has no r requirement and its upper yield limit of 240 MPa is informative; it is applied only by agreement.
- BS 1449 pairings for DC03 differ between sources (CR2 or CR3). The old German name is St 13 or RRSt 13; the grade is aluminium killed in EN 10130.
Chemical composition
Composition limits, mass %
| Element | DS Type B, heat analysisUSA · ASTM A1008/A1008M | DC03 (1.0347), ladle analysisEU · EN 10130 | CR2 drawingInde · IS 513:2008 | SPCDJapan · JIS G 3141:2011 |
|---|---|---|---|---|
| C | 0.02–0.08 | ≤0.10 | ≤0.12 | ≤0.10 |
| Mn | ≤0.50 | ≤0.45 | ≤0.50 | ≤0.50 |
| P | ≤0.020 | ≤0.035 | ≤0.040 | ≤0.040 |
| S | ≤0.020 | ≤0.035 | ≤0.035 | ≤0.035 |
| Cr | ≤0.15 | — | — | — |
| Ni | ≤0.20 | — | — | — |
| Mo | ≤0.06 | — | — | — |
| Cu | ≤0.20 | — | — | — |
| N | — | — | ≤0.007 | — |
| Al | ≥0.02 | — | — | — |
Mechanical properties
Strength and hardness
| Condition | Tensile strength | Yield strength | Elongation | Hardness |
|---|---|---|---|---|
| Cold rolled, annealed and skin-passed (EN 10130 DC03)Specified, transverse test, nominal thickness 0.7–2 mm; yield is a range; A80 minimum; r90 at least 1.3 for 0.5–2 mm (1.1 for 2–3 mm); no n90 requirementEN 10130 as tabulated by ArcelorMittal, Tata Steel Nederland and Roy Mech | 270–370 MPa39–54 ksi | 140–240 MPa20–35 ksi | ≥34 % | — |
| Cold rolled, annealed and skin-passed (EN 10130 DC03)Specified, transverse test, 0.5–0.7 mm; A80 minimumEN 10130 as tabulated by ArcelorMittal | 270–370 MPa39–54 ksi | 140–260 MPa20–38 ksi | ≥32 % | — |
| Cold rolled, annealed and skin-passed (EN 10130 DC03)Specified, transverse test, 0.3–0.5 mm; A80 minimumEN 10130 as tabulated by ArcelorMittal | 270–370 MPa39–54 ksi | 140–280 MPa20–41 ksi | ≥30 % | — |
| Cold rolled, typical range (ASTM A1008 DS Types A and B)Typical and non-mandatory; longitudinal test; elongation in 50 mm; r-bar 1.3–1.7, n 0.17–0.22ASTM A1008/A1008M, Table 3 | — | 150–240 MPa22–35 ksi | ≥36 % | — |
| Cold rolled, annealed and skin-passed (IS 513 CR2)Specified, 0.6 mm and over (elongation 1 point less up to 0.6 mm); elongation Lo = 80 mm; hardness 65 HRB maximumIS 513:2008 with Amendment 1, Tables 3 and 4 | ≤370 MPa≤54 ksi | ≤240 MPa≤35 ksi | ≥30 % | ≤65 HRB |
| Cold rolled, standard temper (JIS SPCD)Specified, 1.0–1.6 mm, No. 5 test piece along rolling direction; elongation is 30 % at 0.25–0.30 mm up to 41 % at 2.5 mm and over, 2 points less if bright finish; yield limit is informative onlyJIS G 3141:2011, Table 5 | ≥270 MPa≥39 ksi | ≤240 MPa≤35 ksi | ≥39 % | — |
In practice
Behaviour, heat treatment and uses
Characteristics
- Aluminium-killed low-carbon steel (C 0.10 % maximum) with a guaranteed r90 of 1.3, giving better drawing performance than DC01 for pressings, boxes and shallow-to-medium drawn parts.
- Yield strength of 140–240 MPa, tensile strength of 270–370 MPa and A80 of at least 34 % at nominal thickness; no n90 requirement.
- Mechanical properties are valid for six months from dispatch, and surface quality A and B are guaranteed free of stretcher-strain marks for the same period.
- EN 10130 defines two surface qualities. Quality A allows small defects that do not impair forming or coating (pores, light scratches, slight dents, slight colour change). Quality B requires the better side to be free of defects that would show through high-grade paint or electroplating, with the other side at least quality A; B is for skin-passed product only and not every size is offered in it.
- Skin-passed sheet can be ordered with a roughness finish: bright b (Ra up to 0.4 µm), semi-bright g (up to 0.9 µm), normal m (0.6–1.9 µm, the default) or rough r (above 1.6 µm). The finish cannot be specified for non-skin-passed product.
- Thin gauges: yield strength limit rises by 20 MPa from 0.5 to 0.7 mm and by 40 MPa at 0.5 mm and below, and minimum A80 falls by 2 and 4 points. r90 and n90 apply from 0.5 mm; above 2 mm r90 falls by 0.2.
- Welds readily by resistance spot, MIG and similar processes because of the low carbon and manganese content.
- Available as DC03+ZE (electrolytic zinc, EN 10152). In hot-dip galvanized form the nearest EN 10346 grade is DX53D, whose limits are looser (A80 ≥30 %, no r-value requirement).
Heat treatment
- Supplied cold rolled, then annealed (batch or continuous) and skin-passed. It is a non-hardening steel; quenching adds nothing.
- Skin passing sets the surface finish and suppresses stretcher-strain lines. Ageing brings the yield-point elongation back, which is why the property period is limited to six months; form within that period.
- Preheat is not normally needed when welding thin sheet; stress relieving is not required.
Usages types
- Pressed and drawn parts of moderate depth, such as housings, covers and cases
- Appliance panels, cabinets and enclosures
- Automotive and transport brackets and internal pressings
- Furniture and office equipment components
- Stamped and formed parts that are later painted or electroplated
Sheet and strip
Similar grades compared
| Grade | C % | Mn % | Cr % | Ni % | Tensile, first listed condition |
|---|---|---|---|---|---|
| DC03 / SPCD | 0.02–0.08 | ≤0.50 | ≤0.15 | ≤0.20 | 270–370 MPa |
| DC01 / SPCC | 0.02–0.15 | ≤0.60 | ≤0.15 | ≤0.20 | 270–410 MPa |
| DC04 / SPCE | ≤0.06 | ≤0.50 | ≤0.15 | ≤0.20 | 270–350 MPa |
| DC05 / SPCF | ≤0.02 | ≤0.40 | ≤0.15 | ≤0.10 | 270–330 MPa |
| DC06 / SPCG | ≤0.02 | ≤0.40 | ≤0.15 | ≤0.10 | 270–330 MPa |
| DD11 / SPHC | ≤0.15 | ≤0.60 | ≤0.15 | ≤0.20 | ≤440 MPa |
| DD12 / SPHD | 0.02–0.08 | ≤0.45 | — | — | ≤420 MPa |
| DD13 / SPHE | ≤0.08 | ≤0.40 | — | — | ≤400 MPa |
| S355MC | ≤0.23 | ≤1.35 | ≤0.15 | ≤0.20 | 430–550 MPa |
| DX51D / 1.0226 | 0.02–0.15 | ≤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.
Questions et réponses
Common questions
What is the equivalent of DC03?
The closest equivalents are ASTM A1008 DS (Type B), IS 513 CR2 (D) and JIS G 3141 SPCD. The old German name is St 13 or RRSt 13 and the EN 10130:1991 name is FeP03.
Is IS 513 CR2 the same as DC03?
They are the usual pairing, not the same specification. Both limit yield to 240 MPa and tensile strength to 370 MPa, but CR2 requires 30 % elongation (A80) against 34 % for DC03 and has no r90 requirement.
What is the difference between DC03 and DC04?
DC04 is the deeper drawing grade. It has lower carbon (0.08 % maximum), a lower yield limit (210 MPa against 240 MPa), A80 of 38 % against 34 %, r90 of 1.6 against 1.3 and a guaranteed n90 of 0.18.
How long can DC03 be stored before forming?
EN 10130 states property validity of six months for DC03, DC04 and DC05, and sheet in surface quality A or B is guaranteed free of stretcher-strain marks for that time. After that the yield point returns and forming marks may appear.
Is DC03 the same as DX53D?
No. DC03 is uncoated cold-rolled sheet under EN 10130. DX53D is the nearest zinc-coated grade under EN 10346, but its limits are looser (A80 ≥30 % and no r-value requirement). Electrolytic zinc coated DC03 is DC03+ZE.
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Related references
References
Sources
- Tata Steel Nederland: cold rolled forming steel (EN 10130) — DC01, DC03 and DC04 limits, thickness adjustments, surface qualities and finishes (Ra).
- ArcelorMittal: B10 steels for cold forming (EN 10130 grades) — Yield, tensile, A80, r90 and n90 by thickness band; ageing guarantee; ASTM and JIS cross-references.
- Roy Mech: BS EN 10130 information — EN 10130:2006 steel numbers, yield range, tensile range, elongation and composition.
- Modulus Metal: EN 10130 standard guide — Grade table with r90, n90, thickness adjustments, ageing periods and surface finish symbols.
- Salzgitter Flachstahl: DC03 data sheet (mild steels for cold forming) — Mill-guaranteed transverse properties, heat analysis and legacy DIN name.
- ASTM A1008/A1008M-18 cold-rolled sheet (copy hosted by US Frame Factory) — Table 1 chemical composition and Table 3 typical (non-mandatory) mechanical properties for CS, DS, DDS and EDDS.
- IS 513:2008 Cold reduced low carbon steel sheet and strip, with Amendment 1 (BIS public copy) — CR designations, composition, mechanical properties and the old O/D/DD/EDD correlation. Current edition is IS 513 (Part 1):2016, which was not available to read.
- JIS G 3141:2011 Cold-reduced carbon steel sheets and strip (JISF English translation) — SPCC to SPCG composition, yield, tensile, elongation and r values.
- Takasago Tekko: cold rolled steel strips (JIS G 3141 values) — SPCC, SPCD and SPCE composition and elongation as listed by a Japanese strip maker.
- Gavex: cold-rolled steel correspondence norms — EN 10130:1991 FeP names, DIN 1623 St names and BS 1449 CR grades against DC01 to DC05.
- Nippon Steel Slovakia (formerly U. S. Steel Košice): drawing steels, EN 10130 DC01 to DC06 table
- Farnell / Multicomp material declaration: cold rolled coils and sheets EN 10130 (2015)
- Kobelco: cold-rolled steel sheet product guide (JIS G 3141 SPCD to SPCG elongation, 6-month non-ageing note)
Values summarize published limits and typical data. The governing standard and the current edition control; check them before specifying.