Materials & grades
DD13 / 1.0335 hot-rolled steel sheet and strip (EN 10111, close to IS 1079 HR3 and JIS SPHE)
DD13 (1.0335) is the deep-drawing grade of EN 10111, a hot-rolled low-carbon strip with the highest elongation below DD14. Its nearest equivalents are IS 1079 HR3 and JIS G 3131 SPHE; ASTM A1011 has no deep-drawing hot-rolled designation, and DS Type B is only a loose match.
Names by standard
What it is called in each region
| Region | System | Designation | תקן | Match |
|---|---|---|---|---|
| USA | ASTM A1011 | DS Type BA1011 offers CS and DS only; there is no hot-rolled DDS designation (DDS exists in ASTM A1008 for cold-rolled sheet). DS Type B is the nearest hot-rolled US grade but is less demanding than DD13. | ASTM A1011/A1011M | Closest equivalent |
| UK | BS EN 10111 | DD13The UK uses the European standard. | BS EN 10111 | Same material |
| EU | EN 10027-1 name | DD13 | EN 10111 | Same material |
| EN 10027-2 number | 1.0335 | EN 10111 | Same material | |
| DIN 1614 (legacy) | StW 24Superseded DIN 1614 name for DD13 (1.0335), per thyssenkrupp. | — | Closest equivalent | |
| הודו | IS 1079 | HR3Deep drawing quality. Tensile maximum 400 MPa and elongation minimum 28 % match DD13 as published by Tata Steel. | IS 1079:2017 | Closest equivalent |
| Japan | JIS G 3131 | SPHEDeep drawing quality. Adds a 270 MPa minimum tensile strength that EN 10111 does not set. | JIS G 3131 | Closest equivalent |
On equivalence
- No equivalent is identical. DD13, IS 1079 HR3 and JIS SPHE are all deep-drawing hot-rolled grades, but their limits differ.
- ASTM A1011 has no hot-rolled deep-drawing designation: its drawing steel is DS Type A or B, which is less demanding. The US 'DDS' name belongs to cold-rolled sheet in ASTM A1008, so do not read it across.
- Tata Steel's chart describes IS 1079 HR1 to HR4 as commercial, drawing, deep drawing and extra deep drawing. HR3 (tensile ≤400 MPa, A ≥28 %) lines up numerically with DD13, and HR4 (≤380 MPa, A ≥31 %) with DD14.
- The IS 1079 composition limits for HR3 could not be read from a source we could verify.
- DD13’s legacy DIN name is StW 24 (number 1.0335), as listed on the thyssenkrupp precidur DD13 data sheet.
- SPHE limits follow the current JIS G 3131 listing (Mycron); one supplier table prints C 0.10, Mn 0.50 and S 0.035.
Chemical composition
Composition limits, mass %
| Element | DD13 (1.0335)EU · EN 10111 | SPHEJapan · JIS G 3131 |
|---|---|---|
| C | ≤0.08 | ≤0.08 |
| Mn | ≤0.40 | ≤0.40 |
| P | ≤0.030 | ≤0.030 |
| S | ≤0.030 | ≤0.030 |
Mechanical properties
Strength and hardness
| Condition | Tensile strength | Yield strength | Elongation | Hardness |
|---|---|---|---|---|
| Hot rolled (EN 10111 DD13)Specified, thickness under 2 mm; elongation A80 (80 mm gauge)EN 10111 as tabulated by Nippon Steel Slovakia and ArcelorMittal | ≤400 MPa≤58.0 ksi | 170–330 MPa24.7–47.9 ksi | ≥28 % | — |
| Hot rolled (EN 10111 DD13)Specified, thickness 2 to under 3 mm; elongation A80EN 10111 as tabulated by Nippon Steel Slovakia and ArcelorMittal | ≤400 MPa≤58.0 ksi | 170–310 MPa24.7–45.0 ksi | ≥29 % | — |
| Hot rolled (EN 10111 DD13)Specified, thickness 3 to 11 mm; elongation A (5.65√S0 gauge); mill production range is narrower (up to about 8 mm)EN 10111 as tabulated by Nippon Steel Slovakia and ArcelorMittal | ≤400 MPa≤58.0 ksi | 170–310 MPa24.7–45.0 ksi | ≥33 % | — |
| Hot rolled (IS 1079 HR3)Specified; tensile maximum and elongation minimum as published by Tata Steel; no yield limit shown; ordering range 1.6 to 12 mmIS 1079 as published by Tata Steel (Astrum HR3) | ≤400 MPa≤58.0 ksi | — | ≥28 % | — |
| Hot rolled (JIS G 3131 SPHE)Specified; tensile is a minimum; elongation 27 % at 1.4 to under 1.6 mm, 31 % at 1.6 to under 2.0 mm, 33–37 % from 2.0 to under 4 mm, 39 % at 4 mm and overJIS G 3131 grade table as tabulated by Krakatau POSCO | ≥270 MPa≥39.2 ksi | — | 27–39 % | — |
In practice
Behaviour, heat treatment and uses
Characteristics
- Very low carbon (≤0.08 %) and manganese (≤0.40 %), with phosphorus and sulphur held to 0.030 %: the steel stays soft and ductile for deep drawing.
- Maximum tensile strength is 400 MPa, 40 MPa below DD11, with 33 % minimum elongation above 3 mm.
- Readily weldable, and responds well to deep drawing, stretch forming and flanging in hot-rolled gauges.
- Produced in a narrower thickness range than DD11 and DD12 (mills quote about 1.0 to 8 mm); confirm availability for heavy gauges.
Heat treatment
- Supplied hot rolled from the coil; no heat treatment is needed for forming.
- Not hardened; the very low carbon content gives no useful response to quenching.
- Hot-dip galvanizing or pickling and oiling is applied by agreement.
שימושים אופייניים
- Deep-drawn and stretch-formed parts such as wheel centres and fuel-tank halves
- Pressed automotive structural and chassis parts with severe forming
- Appliance and machine housings
- Cylinders, gas bottles and tank ends
Sheet and strip
Similar grades compared
| דרגה | C % | Mn % | Cr % | Ni % | Tensile, first listed condition |
|---|---|---|---|---|---|
| DD13 / SPHE | ≤0.08 | ≤0.40 | — | — | ≤400 MPa |
| DD11 / SPHC | ≤0.15 | ≤0.60 | ≤0.15 | ≤0.20 | ≤440 MPa |
| DD12 / SPHD | 0.02–0.08 | ≤0.45 | — | — | ≤420 MPa |
| S355MC | ≤0.23 | ≤1.35 | ≤0.15 | ≤0.20 | 430–550 MPa |
| DC01 / SPCC | 0.02–0.15 | ≤0.60 | ≤0.15 | ≤0.20 | 270–410 MPa |
| DC03 / SPCD | 0.02–0.08 | ≤0.50 | ≤0.15 | ≤0.20 | 270–370 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 |
| 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.
תשובות לשאלות
Common questions
What is the equivalent of DD13 steel?
The nearest equivalents are IS 1079 HR3 and JIS G 3131 SPHE. ASTM A1011 has no hot-rolled deep-drawing grade; DS Type B is the nearest US designation but is less demanding.
Is DD13 the same as SPHE?
They are both deep-drawing hot-rolled grades but not the same specification. SPHE requires a 270 MPa minimum tensile strength; DD13 sets maximum yield (up to 330 MPa) and tensile strength (400 MPa).
What are the DD13 yield and tensile strength?
EN 10111 gives DD13 a yield range of 170–330 MPa under 2 mm and 170–310 MPa from 2 to 11 mm, with tensile strength up to 400 MPa. Minimum elongation is 33 % from 3 mm.
Is DD13 the same as DC04?
No. DC04 (EN 10130) is cold-rolled and thinner, with a finer surface and tighter tolerances. DD13 is hot rolled from 1 mm up; it is used where hot-rolled gauges and a rougher surface are acceptable.
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Related references
References
Sources
- Nippon Steel Slovakia: EN 10111 drawing steels DD11 to DD14 — Yield, tensile and elongation by thickness band; heat-analysis C, Mn, P, S.
- ArcelorMittal Industry catalogue: EN 10111 hot-rolled grades — Yield, tensile, A80 and A5.65 by thickness; no Si, Al or CEV limit for DD grades.
- Arvedi: steels for cold deformation as per EN 10111 — Material numbers 1.0332, 1.0398, 1.0335, 1.0389; composition limits.
- DIN Media: EN 10111 Continuously hot rolled low carbon steel sheet and strip for cold forming — Scope and title of the standard (thickness up to 11 mm).
- Krakatau POSCO: hot-rolled coil specification table (MS 1705, JIS grade names SPHC, SPHD, SPHE) — Composition, tensile minimum and elongation by thickness for SPHC, SPHD and SPHE as tabulated for the Malaysian standard that uses the JIS grade names.
- Tata Steel DigECA: Tata Astrum IS 1079 HR3 — Tensile maximum 400 MPa, elongation minimum 28 %.
- Tata Steel DigECA: steel grade chart India — IS 1079 HR1 to HR4 described as commercial, drawing, deep drawing and extra deep drawing quality.
- 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.
- SSAB: ASTM A1011 product range — Lists the A1011 designations offered: HSLAS, HSLAS-F and SS grades; no DDS designation.
- Total Materia: ASTM A 1011 DS Type B — C 0.02–0.08, Al ≥0.01; typical yield and elongation; EN DD12 listed as an implicit equivalent.
Values summarize published limits and typical data. The governing standard and the current edition control; check them before specifying.