EN10025-2 S450J0 steel plate supplier

Gangsteel reviews EN 10025-2 S450J0 steel plate enquiries where an older drawing or purchasing schedule calls for S450J0. This is a legacy specification review, not an assertion that S450J0 plate is covered by EN 10025-2:2019. The EN 10025-2 steel plate family includes current and historical designations that must be distinguished before ordering.

S450 was deleted in EN 10025-2:2019. In the preceding EN 10025-2:2004 edition, S450J0 was specified for long products only, at nominal thickness 3–150 mm; those requirements are not standard acceptance values for plate. The historical tables below are labelled accordingly. A plate enquiry must establish an approved applicable specification and acceptance criteria rather than transferring long-product figures onto plate.

Grade Designation

S — structural steel.
450 — historical minimum yield class in MPa at thickness up to 16 mm for the covered long products.
J0 — historical longitudinal Charpy quality at 0 °C.
Steel number 1.0590 — listed for S450J0 in EN 10025-2:2004, not a current 2019 plate grade.

EN10025-2 S450J0 remains a name encountered in procurement, but the standard edition and product form are essential. Do not relabel a current S355 plate, an S460 long product or a quenched-and-tempered plate as S450J0 on the basis of a similar strength level.

Key Advantages of EN 10025-2 S450J0 Steel Plate

Edition-aware review prevents a withdrawn designation being quoted as a current plate certification.
Historical source data are separated from any proposed plate acceptance criteria.
Technical clarification can address product form, design approval and the required inspection document before procurement.
Gangsteel coordinates plate enquiries, dimensional requirements and export documentation against the agreed order.
Processing requirements, including cutting allowances and drawing details, can be reviewed at enquiry without assuming a universal fabrication procedure.

Chemical Composition (Heat Analysis, Maximum %)

Historical reference only: EN 10025-2:2004, Table 2, S450J0 long products. These are not standardized S450J0 plate limits and are not 2019 requirements.

Element / historical thickness	Maximum, mass %
C, 3–30 mm	0.20
C, >30–150 mm	0.22
Si	0.55
Mn	1.70
P, base table value	0.030
S, base table value	0.030
N	0.025
Cu	0.55
Nb, permitted maximum	0.05
V, permitted maximum	0.13
Ti, permitted maximum	0.05

The 2004 table is explicitly limited to long products for this grade. Its footnotes permit P and S to be 0.005% higher for long products; any further machinability-related sulfur arrangement is an order-specific option, not a plate limit. The nitrogen maximum is subject to the aluminium/nitrogen-binding exception in that table. None of these provisions establishes a plate specification.

Mechanical Properties

Historical long-product reference only: EN 10025-2:2004, Table 7. The figures below must not be represented as standard S450J0 plate acceptance values.

Historical long-product thickness	Yield ReH min, MPa	Tensile Rm, MPa	Longitudinal A min, %
3–16 mm	450	550–720	17
>16–40 mm	430	550–720	17
>40–63 mm	410	550–720	17
>63–80 mm	390	550–720	17
>80–100 mm	380	550–720	17
>100–150 mm	380	530–700	17

Historical elongation uses L₀ = 5.65√S₀ in the longitudinal direction. Table 9 of the 2004 edition specifies 27 J longitudinal Charpy energy at 0 °C for the covered S450J0 long products. There is no corresponding S450J0 entry in the 2019 tables. Any proposed plate must have separately approved acceptance requirements; confirm the agreed specification, tests and results on the mill certificate / inspection document.

Delivery Condition and Fabrication

A historical designation alone does not authorize a plate delivery route. State the product specification, strength and impact acceptance, delivery condition and inspection requirements in an approved procurement document. No current S460 designation is asserted as an automatic replacement for S450J0.

Welding, forming, flame straightening and subsequent heat treatment require a procedure suited to the actual heat chemistry, thickness, restraint and project code. Gangsteel does not infer a universal preheat, welding procedure or heat-treatment cycle from the designation alone.

Available Dimensions

No standardized S450J0 plate thickness range is asserted: the 2004 grade scope was 3–150 mm for long products only, and the grade was deleted in 2019.
For a plate enquiry, provide thickness × width × length, quantity and the approved specification for technical review.
Exact mill capability, dimensions, tolerances and availability require confirmation; this page is not a stock list.

Main Applications

Technical review of legacy S450J0 calls on drawings or purchasing schedules.
Replacement-material evaluation where the designer must approve a current, product-form-appropriate specification.
Structural procurement requiring a documented distinction between historical long-product requirements and a proposed plate order.

Equivalent Grades of EN 10025-2 S450J0

No direct cross-standard equivalent is asserted for EN 10025-2 S450J0. A matching strength number does not establish equivalence; any substitute requires designer and purchaser approval after comparing the contractual edition, product form, chemistry, thickness-dependent strength, toughness, delivery condition and inspection requirements.

The 2019 edition does not provide a current S450J0 grade or a standardized S450J0 plate table. Other strength classes in this family are comparisons only. Do not select a replacement by changing the strength number or by transferring an S460 long-product table to plate.

Frequently Asked Questions (FAQ)

Is EN 10025-2 S450J0 a current 2019 plate grade?

No. S450 was deleted in EN 10025-2:2019. The earlier 2004 S450J0 provision was for long products only, not a standardized plate grade.

Can the historical EN 10025-2 S450J0 figures certify plate?

No. The historical chemistry and mechanical tables reproduced here are long-product references. A proposed plate needs an approved specification and separate acceptance criteria; long-product figures cannot be transferred automatically.

What impact requirement was associated with EN 10025-2 S450J0?

The 2004 edition lists 27 J longitudinal Charpy energy at 0 °C for covered S450J0 long products. This historical requirement does not establish a plate toughness guarantee or an allowable service temperature.

What dimensions can be quoted for EN 10025-2 S450J0 plate?

No standard plate-size range is claimed. Provide your plate dimensions and quantity together with the designer-approved specification so that scope, manufacturing feasibility and inspection can be reviewed.

Can another grade replace EN 10025-2 S450J0?

Only with designer and purchaser approval. Compare the complete specification, product form, edition, chemistry, thickness-dependent strength, toughness, delivery condition and inspection. Similar names or nominal strength do not authorize substitution.

Can EN 10025-2 S450J0 be welded and processed?

First establish an approved plate specification. Fabrication procedures then need review for the actual supplied material, thickness and design code; the historical S450J0 designation alone is insufficient.

What should an enquiry for EN 10025-2 S450J0 include?

Provide the standard edition, full designation, product form, delivery condition, thickness × width × length, quantity, impact requirements, inspection documentation and processing drawings. Gangsteel will review the technical basis and confirm exact dimensions, availability, price and delivery against the enquiry.

For EN 10025-2 S450J0 steel plate supply and technical enquiries, please contact Gangsteel with your specification, dimensions and quantity.