Material designation
01
State the requested 304 stainless steel designation and the applicable material standard. Equivalent grades should be reviewed against the drawing and agreed in writing rather than assumed to be interchangeable.
Specify 304 stainless steel, dimensions and surface requirements for your drawing and application.


OUR APPROACH
A stainless substrate with a chrome working surface. Specify the 304 material and coating requirements separately.
The result is a written set of requirements for your order — material, dimensions, surface condition and agreed inspection records.
OUR APPROACH
A stainless substrate with a chrome working surface. Specify the 304 material and coating requirements separately.
The result is a written set of requirements for your order — material, dimensions, surface condition and agreed inspection records.
TECHNICAL REFERENCE
| Parameter | Reference value | Application / confirmation |
|---|---|---|
| Material | 304 stainless steel | 304 is explicitly included in the source chrome-bar family; do not substitute 310 or 316 without agreement. |
| Diameter | 10–160 mm | Confirm the order requirement with your quotation. |
| Diameter tolerance | f7 | Confirm the order requirement with your quotation. |
| Chrome thickness | 150: ≥12 · 250: ≥20 · 500: ≥30 | Raw source minima: units are omitted in the coating-thickness column. Confirm the unit before using these values in an order. |
| Chrome-layer hardness | ≥1000 HV0.1 | Chrome coating only. This value does not describe the core or induction hardened layer. |
| Surface roughness | Ra ≤0.10 · Rt ≤1.00 | Raw source Ra/Rt values; the chrome tables omit their unit. Confirm the unit, test method and sampling length. |
| Ovality | ≤ ½ of the diameter tolerance | Confirm the selected diameter tolerance and measurement method. |
| Straightness | ≤0.2 mm/m | Agree measurement length and support conditions. |
| Microcrack density | ≥6000 microcracks/mm² | Catalogue coating characteristic; not a MYLER inspection result. |
| NSS corrosion reference | 150: R10 150 h / R9 300 h; 250: R10 250 h / R9 500 h; 500: R10 500 h / R9 1000 h | Source finish classes only. Test: ISO 9227; evaluation: ISO 10289. Request order-specific test evidence. |
| Length | Confirm for the order | No universal length is stated in the referenced product table. |
| Core hardness | Confirm for the delivery condition | The reference does not specify a 304 core-hardness limit. |
| Chemistry — C / Si / Mn | C ≤0.07%; Si ≤0.75%; Mn ≤2.00% | Confirm the order requirement with your quotation. |
| Chemistry — Cr / Ni | Cr 17.5–19.0%; Ni 8.0–10.5% | Confirm the order requirement with your quotation. |
| Chemistry — N / P / S | N ≤0.10%; P ≤0.045%; S ≤0.030% | Confirm the order requirement with your quotation. |
| Mechanical reference | Rp0.2 205 MPa · Rm 515 MPa · A 40% | Source values have no inequality signs or delivery condition; do not turn them into guaranteed minima. |
| Material-standard check | Confirm the bar standard | The source lists ASTM A240 for 304. Confirm a standard appropriate to the ordered bar form and delivery condition. |
| Other reference-family grades | C35 · 20MnV(S)6 · 38MnV(S)6 · X20Cr13 · 310 · 316 | Additional source grades, not equivalents to this product. Ask for separate MYLER availability and grade-specific chemistry/mechanical properties. |
WHAT TO SPECIFY
Specify one size or several drawing references. Confirm the material, dimensional tolerances, finish and documentation for each line item before an order is agreed.
Material designation
01
State the requested 304 stainless steel designation and the applicable material standard. Equivalent grades should be reviewed against the drawing and agreed in writing rather than assumed to be interchangeable.
Dimensions & tolerances
02
Provide diameter, length and the tolerances that affect fit and assembly. Include any straightness, roundness or related geometric requirements shown on your drawing so the complete dimensional scope can be confirmed.
Chrome layer
03
State the chrome layer requirements and any relevant acceptance limits. Confirm coating scope, measurement method and the relationship to finished diameter with the order specification.
Surface roughness
04
State the required surface roughness and the surface to be measured. If the drawing includes a measurement method, sampling length or acceptance limit, include it with the enquiry for confirmation.
End details
05
Cutting, turning, drilling, tapping, chamfering and end machining can be specified. Include threads, shoulders, holes and the current drawing revision so finished dimensions remain clear.
Inspection documents
06
Request an MTC or EN 10204 3.1 inspection certificate with the inquiry when required. Confirm document scope and traceability alongside dimensional, roughness, hardness and chrome-thickness checks.
Packing requirements
07
Our standard packing is paper wrapping followed by wooden cases. The paper helps protect rod and tube surfaces from scratches, while the outer wooden case helps guard against knocks during handling and transport. Include any special packing requirements with your inquiry.
WHAT TO SPECIFY
Specify one size or several drawing references. Confirm the material, dimensional tolerances, finish and documentation for each line item before an order is agreed.
Material designation
01
State the requested 304 stainless steel designation and the applicable material standard. Equivalent grades should be reviewed against the drawing and agreed in writing rather than assumed to be interchangeable.
Dimensions & tolerances
02
Provide diameter, length and the tolerances that affect fit and assembly. Include any straightness, roundness or related geometric requirements shown on your drawing so the complete dimensional scope can be confirmed.
Chrome layer
03
State the chrome layer requirements and any relevant acceptance limits. Confirm coating scope, measurement method and the relationship to finished diameter with the order specification.
Surface roughness
04
State the required surface roughness and the surface to be measured. If the drawing includes a measurement method, sampling length or acceptance limit, include it with the enquiry for confirmation.
End details
05
Cutting, turning, drilling, tapping, chamfering and end machining can be specified. Include threads, shoulders, holes and the current drawing revision so finished dimensions remain clear.
Inspection documents
06
Request an MTC or EN 10204 3.1 inspection certificate with the inquiry when required. Confirm document scope and traceability alongside dimensional, roughness, hardness and chrome-thickness checks.
Packing requirements
07
Our standard packing is paper wrapping followed by wooden cases. The paper helps protect rod and tube surfaces from scratches, while the outer wooden case helps guard against knocks during handling and transport. Include any special packing requirements with your inquiry.
OUR PROCESS
From drawing review to agreed supply
Each enquiry starts with the drawing and ends with an agreed scope. Material, dimensions, finish and inspection requirements are reviewed together before supply is confirmed.
Step
Drawing review
001
Start with the requirement
Send your drawing, revision, quantity and application. State the requested 304 stainless steel condition and any requirements that are not shown on the drawing so the enquiry can be reviewed as a complete specification.
Step
Material review
002
Confirm the designation
Review the requested material standard and delivery condition. Where a grade alternative is proposed, its suitability must be checked against the specified requirements and accepted before it replaces the original material.
Step
Dimensions
003
Define the fit
Check diameter, length and all specified tolerances against the drawing. Record straightness, roundness and end details wherever they affect the intended fit or assembly.
Step
Surface review
004
Confirm the working surface
Review the surface finish and chrome layer requirements. Acceptance limits and the inspection method need to be confirmed against the drawing before an order is agreed.
Step
Order agreement
005
Put the scope in writing
Confirm the reviewed specification, quantity, documentation and packing requirements. Delivery timing and any remaining technical questions must be resolved in the written order agreement.
Step
Release review
006
Match the agreed records
Review the records required by the order alongside the identification and packing details. Any deviation from the agreed scope requires review before the material is accepted for dispatch.
OUR PROCESS
Each enquiry starts with the drawing and ends with an agreed scope. Material, dimensions, finish and inspection requirements are reviewed together before supply is confirmed.
Start with the requirement
Send your drawing, revision, quantity and application. State the requested 304 stainless steel condition and any requirements that are not shown on the drawing so the enquiry can be reviewed as a complete specification.
Confirm the designation
Review the requested material standard and delivery condition. Where a grade alternative is proposed, its suitability must be checked against the specified requirements and accepted before it replaces the original material.
Define the fit
Check diameter, length and all specified tolerances against the drawing. Record straightness, roundness and end details wherever they affect the intended fit or assembly.
Confirm the working surface
Review the surface finish and chrome layer requirements. Acceptance limits and the inspection method need to be confirmed against the drawing before an order is agreed.
Put the scope in writing
Confirm the reviewed specification, quantity, documentation and packing requirements. Delivery timing and any remaining technical questions must be resolved in the written order agreement.
Match the agreed records
Review the records required by the order alongside the identification and packing details. Any deviation from the agreed scope requires review before the material is accepted for dispatch.
FREQUENTLY ASKED QUESTIONS
What to confirm before placing your order.
The chrome-bar reference groups several grades for surface properties. Chemistry, core properties and delivery condition remain grade-specific; 304, C45 and 42CrMo4 are not interchangeable.
Send your drawing and required parameters for review. Material, dimensions, surface requirements and acceptance criteria are confirmed in the quotation.
Send the exact product, material, delivery condition, dimensions, quantity and drawing. Specify tolerances, roughness, straightness, hardness, inspection records and any special packing requirements.
A drawing can be used to review the material and dimensional requirements. Include the current revision, applicable standards and any supplementary acceptance criteria so open points can be confirmed before ordering.
List each size or drawing reference as a separate line item with its quantity and required condition. The specification, documentation and delivery requirements for each item can then be reviewed clearly.
Need to confirm another requirement?
View all FAQ’sFREQUENTLY ASKED QUESTIONS
What to confirm before placing your order.
The chrome-bar reference groups several grades for surface properties. Chemistry, core properties and delivery condition remain grade-specific; 304, C45 and 42CrMo4 are not interchangeable.
Send your drawing and required parameters for review. Material, dimensions, surface requirements and acceptance criteria are confirmed in the quotation.
Send the exact product, material, delivery condition, dimensions, quantity and drawing. Specify tolerances, roughness, straightness, hardness, inspection records and any special packing requirements.
A drawing can be used to review the material and dimensional requirements. Include the current revision, applicable standards and any supplementary acceptance criteria so open points can be confirmed before ordering.
List each size or drawing reference as a separate line item with its quantity and required condition. The specification, documentation and delivery requirements for each item can then be reviewed clearly.
Need to confirm another requirement?
Check out complete FAQ’sEach 304 chrome rod enquiry begins with the material, dimensions and working surface required by your drawing.
From there, confirm the inspection, documentation and packing requirements for the order.