WUXI PAZON TECHNOLOGY CO., LTD
English
- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
loading
loading
| Availability: | |
|---|---|
| Quantity: | |
The Chrome Plated AISI4130 Rod (Quenched & Tempered) features a Q&T treated chromium-molybdenum alloy steel core of 260–330 HB, delivering excellent strength and fatigue resistance. Available in φ6–300 mm, up to 8000 mm long, it meets ISO f7 tolerance with an 850–1150 HV hard chrome finish and 96-hour salt spray rating 9. Ideal for medium-to-high-pressure hydraulic cylinders, it supports full customization of dimensions, heat treatment and surface finishing.
PZPR0044
PAZON
The Chrome Plated AISI4130 Rod (Quenched & Tempered) is manufactured from premium AISI 4130 chromium-molybdenum alloy steel (30CrMo / 1.7218), processed with quenching and tempering (Q&T) prior to precision grinding and hard chrome plating. Containing chromium and molybdenum, AISI 4130 offers excellent hardenability, achieving a balanced combination of strength and toughness after Q&T, along with notable fatigue resistance and moderate high-temperature strength. This rod is designed for medium-to-high-pressure hydraulic cylinders, aerospace hydraulic components, oil & gas equipment, construction machinery, and actuators subjected to cyclic loads—an ideal solution balancing strength, toughness and reliability.
Diameter: Mainly φ6–300 mm, larger custom sizes accepted
Length: ≤8000 mm, custom lengths available
Straightness: ≤0.2 mm/M
Tolerance Grades: IT6–IT9
OD Tolerance: According to ISO f7/f8/g6/h7/h8/h9; customized tolerances available upon request
Ovality: Half of the tolerance value ISO f7
Heat Treatment: Quenched & Tempered; customization options include Induction Hardening and QPQ
Core Hardness: 260–330 HB (typical hardness range for Q&T treated 4130, can be optimized upon request)
Surface Treatment: Hard Chrome Plated; customization options: EN Plating / Zinc Plating / Laser Cladding / Nitriding / QPQ / Thermal Spraying / Ceramic Coating
Chrome Thickness: ≥10 μm, mainly 20–40 μm; can be over 100 μm for high-standard requirements
Chrome Layer Hardness: 850–1150 HV (Vickers 100 gf)
Surface Roughness: Ra≤0.2 μm, Rt≤2 μm
Cohesion: No cracks, breaking or detaching after thermal shock (warming up at 300 ℃ and cooling in water)
Porosity: Tested according to ISO 1456/1458, evaluation according to ISO 10289 rating 8–10. Under 10× magnification, no more than 30 micro white pin-holes per 1000 mm², with diameter not greater than approx. 0.1 mm
Corrosion Resistance: Tested in neutral salt spray according to ISO 9227/ASTM B117 – 96 hours, rating 9 per ISO 10289
Weldability: Fair (alloy content raises carbon equivalent; strict preheating, use of matching filler such as ER80S-D2, and post-weld stress-relief tempering are mandatory)
Packing: Anti-rust oil + cardboard tube/plastic sleeve + wooden case
Q&T treated AISI 4130 chromium-molybdenum steel with excellent hardenability delivers a balanced core hardness of 260–330 HB
Outstanding fatigue and impact resistance for cyclic loading and vibration environments
Hard chrome layer at 850–1150 HV provides superior wear, scratch and corrosion protection
Tight f7 OD tolerance and minimal ovality ensure reliable high-pressure sealing and low-friction operation
96-hour salt spray rating 9, meeting long-term corrosion resistance in harsh environments
Can be further enhanced with Induction Hardening or QPQ for higher surface hardness gradients
Full customization provides proven material and process solutions for high-end hydraulic systems
In addition to standard specifications, we offer:
Custom diameters and lengths, including large and extra-long sizes
Tolerance grades and non-standard OD tolerances
Higher straightness upon request
Tailored core hardness range and mechanical properties
Combined heat treatments such as Induction Hardening or QPQ
Surface treatment alternatives: zinc plating, electroless nickel, laser cladding, nitriding, thermal spray, ceramic coating
Extra-thick chrome layers (can exceed 100 μm)
Enhanced corrosion resistance and dedicated packing solutions
Limits and Fits Table
The table below provides shaft deviation values for commonly used tolerance grades f7, f8, g6, h7, h8, and h9 to assist your selection according to seal fits.
Limits and Fits Table | ||||||||||||
Diameter | f7 | f8 | g6 | h7 | h8 | h9 | ||||||
es | ei | es | ei | es | ei | es | ei | es | ei | es | ei | |
>6-10 | -0.013 | -0.028 | -0.013 | -0.035 | -0.005 | -0.014 | 0 | -0.015 | 0 | -0.022 | 0 | -0.036 |
>10-18 | -0.016 | -0.034 | -0.016 | -0.043 | -0.006 | -0.017 | 0 | -0.018 | 0 | -0.027 | 0 | -0.043 |
>18-30 | -0.020 | -0.041 | -0.020 | -0.053 | -0.007 | -0.020 | 0 | -0.021 | 0 | -0.033 | 0 | -0.052 |
>30-50 | -0.025 | -0.050 | -0.025 | -0.064 | -0.009 | -0.025 | 0 | -0.025 | 0 | -0.039 | 0 | -0.062 |
>50-80 | -0.030 | -0.060 | -0.030 | -0.076 | -0.010 | -0.029 | 0 | -0.030 | 0 | -0.046 | 0 | -0.074 |
>80-120 | -0.036 | -0.071 | -0.036 | -0.090 | -0.012 | -0.034 | 0 | -0.035 | 0 | -0.054 | 0 | -0.087 |
>120-180 | -0.043 | -0.083 | -0.043 | -0.106 | -0.014 | -0.039 | 0 | -0.040 | 0 | -0.063 | 0 | -0.100 |
>180-250 | -0.050 | -0.096 | -0.050 | -0.122 | -0.015 | -0.044 | 0 | -0.046 | 0 | -0.072 | 0 | -0.115 |
>250-315 | -0.056 | -0.108 | -0.056 | -0.137 | -0.017 | -0.049 | 0 | -0.052 | 0 | -0.081 | 0 | -0.130 |
>315-400 | -0.062 | -0.119 | -0.062 | -0.151 | -0.018 | -0.054 | 0 | -0.057 | 0 | -0.089 | 0 | -0.140 |
>400-500 | -0.068 | -0.131 | -0.068 | -0.165 | -0.020 | -0.060 | 0 | -0.063 | 0 | -0.097 | 0 | -0.155 |
>500-630 | -0.076 | -0.146 | -0.076 | -0.186 | -0.022 | -0.066 | 0 | -0.070 | 0 | -0.110 | 0 | -0.175 |
>630-800 | -0.080 | -0.160 | -0.080 | -0.205 | -0.024 | -0.074 | 0 | -0.080 | 0 | -0.125 | 0 | -0.200 |
>800-1000 | -0.086 | -0.176 | -0.086 | -0.226 | -0.026 | -0.082 | 0 | -0.090 | 0 | -0.140 | 0 | -0.230 |
>1000-1250 | -0.098 | -0.203 | -0.098 | -0.263 | -0.028 | -0.094 | 0 | -0.105 | 0 | -0.165 | 0 | -0.260 |
>1250-1600 | -0.110 | -0.235 | -0.110 | -0.305 | -0.030 | -0.108 | 0 | -0.125 | 0 | -0.185 | 0 | -0.290 |
Chemical Composition
The table presents the standard chemical composition of frequently used materials such as CK45, 25Mn, 20#, ST52, 40Cr, 42CrMo4, 20MnV6 and 38MnVS6 for your reference.
Chemical Composition | ||||||||||
Material | C(%) | Si(%) | Mn(%) | P(%) | S(%) | V(%) | Ni(%) | Cr(%) | Mo(%) | Cu(%) |
CK45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 | ≤0.25 | ||
25Mn | 0.22-0.30 | 0.17-0.37 | 0.70-1.00 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 | ≤0.25 | ||
20# | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 | ≤0.25 | ||
ST52 | ≤0.24 | ≤0.55 | ≤1.6 | ≤0.045 | ≤0.045 | 0.01-0.12 | ≤0.50 | ≤0.30 | ≤0.10 | ≤0.55 |
40Cr | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | ≤0.30 | 0.80-1.10 | ≤0.30 | ||
42CrMo4 | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.07-0.12 | ≤0.03 | 0.90-1.20 | 0.15-0.25 | ≤0.030 |
20MnV6 | 0.17-0.24 | 0.17-0.37 | 1.30-1.60 | ≤0.035 | ≤0.035 | 0.10-0.20 | ≤0.30 | ≤0.30 | ≤0.30 | |
38MnVS6 | 0.34-0.41 | ≤0.80 | 1.20-1.60 | ≤0.025 | 0.02-0.06 | 0.08-0.20 | ≤0.30 | ≤0.08 | ≤0.30 | |
Mechanical Properties
The following table lists reference tensile strength, yield strength, elongation and impact energy values for CK45 (hot-rolled, cold-drawn, Q&T), 25Mn, 20#, ST52, Q345D, 40Cr, 42CrMo4, 20MnV6 and 38MnVS6 under various conditions.
Mechanical Properties | |||||
Material | T.S | Y.S | E% | CHARPY | CONDITION |
CK45 | 610 | 355 | 15 | ＞41J | Normalised |
CK45 | 630 | 540 | 15 | ＞41J | Cold Drawn |
CK45 | 800 | 630 | 20 | ＞41J | Q+T |
25Mn | 620 | 520 | 15 | Cold Drawn | |
20# | 520 | 400 | 15 | Cold Drawn | |
ST52 | 500 | 355 | 22 | Normalised | |
Q345D | 620 | 520 | 15 | ＞27(-20°C) | Cold Drawn |
40Cr | 1000 | 800 | 10 | Q+T | |
42CrMo4 | 980 | 850 | 14 | ＞47J | Q+T |
20MnV6 | 750 | 590 | 12 | ＞40J | Normalised |
38MnVS6 | 850 | 580 | 15 | Normalised | |
